Name: The Best Colcannon Recipe (Irish Mashed Potatoes) Recipe
Prep time: 15 min
Cook time: 1 h 15 min
Total time: 1 h 30 min
Cuisine: Irish
Ingredients: 1.5 lbs white potatoes (washed, skin left on); 1 lb sweet potatoes (washed, skin left on); 3 cups Brussels sprouts (outer leaves removed, thinly sliced); 2 large shallots (diced); 2 garlic cloves (finely chopped); 1/2 cup parsley (finely chopped); 1.5 tbsp extra virgin olive oil; 2 tbsp butter; 2/3 cup milk; 1/3 cup freshly grated parmesan cheese; 1 tsp sea salt flakes; 1/2 tsp black pepper (freshly ground)

I am absolutely thrilled to share with you what I truly believe is The Best Colcannon Recipe (Irish Mashed Potatoes) Recipe. This dish combines the comforting creaminess of traditional mashed potatoes with the subtle sweetness of sweet potatoes and the hearty earthiness of Brussels sprouts, all brought together with plenty of fresh herbs, garlic, and a touch of parmesan. It’s a soulful, colorful twist on a classic Irish favorite that feels comforting and vibrant at the same time. Every time I make this, it fills my kitchen with the most inviting aroma, and I can’t wait for you to experience it too.

Why You'll Love This The Best Colcannon Recipe (Irish Mashed Potatoes) Recipe

What really sets this recipe apart for me is the wonderful balance of flavors and textures. You have the white potatoes that give that classic, creamy mash backbone, and the sweet potatoes that add a naturally sweet, velvety contrast. The Brussels sprouts bring a slight crunch and a beautiful green color that livens up the dish visually and taste-wise. The parmesan cheese sprinkled in and melted on top adds a nutty, savory depth that brings everything together perfectly. Honestly, it’s a bowl of pure comfort with delightful surprises in every bite.

Another reason I love this recipe is how approachable it is. Yes, it takes a bit of time to bake the potatoes, but the preparation steps are straightforward and enjoyable—plus, baking the potatoes brings out their natural sweetness. I find this dish is fantastic served at family dinners, especially around the holidays or chilly weekends when you want something warm and hearty. It’s impressive enough to serve guests but simple enough to make any night special. The way it stands out is through those layers of flavor you get without needing any complicated ingredients or techniques.

Ingredients You'll Need

The image shows a white marbled surface with fresh raw ingredients neatly arranged. There are three large pale yellow potatoes and three medium orange sweet potatoes on the left side. A bunch of bright green parsley sits at the top left corner. To the right, there is a white bowl filled with green Brussels sprouts. Next to it are two brown shallots and a small white bowl holding finely grated pale yellow Parmesan cheese. Near the bottom center is a small clear glass container of white milk and a tiny white dish with golden olive oil. Close by is a small white plate with two purple garlic cloves and another white plate divided into two halves holding white salt and black pepper. Everything is spaced and organized cleanly on the white marbled surface. photo taken with an iphone --ar 4:5 --v 7

The beauty of this recipe lies in its simplicity. Each ingredient is essential not just for flavor but also for creating a pleasing texture and inviting colors that make this dish so appetizing. From the creamy whites to the golden orange sweet potatoes and vibrant green Brussels sprouts, every element plays a crucial role.

White potatoes: The perfect starchy base for that classic creamy texture in your mash.
Sweet potatoes: These add natural sweetness and a stunning orange hue that contrasts beautifully with the white potatoes.
Extra virgin olive oil: Adds richness and helps sauté the Brussels sprouts and shallots until tender and caramelized.
Brussels sprouts: Thinly sliced for a slight crunch and vibrant green color that brightens the dish.
Shallots: Their mild onion flavor adds just the right amount of sweetness and depth.
Garlic cloves: Finely chopped to infuse the mash with subtle pungency and warmth.
Parsley: Fresh and finely chopped to add an herby brightness and freshness.
Milk: Warmed for creamy smoothness in the mash without cooling the potatoes.
Butter: Adds luxurious richness and helps combine the ingredients beautifully.
Sea salt flakes: Enhances all the flavors perfectly without overpowering.
Black pepper: Freshly ground for a subtle peppery kick.
Freshly grated parmesan: Offers a nutty, savory note and melts on top for a wonderful crust after baking.

Directions

Step 1: First, gather all your ingredients and equipment. Preheat your oven to 350ºF (180ºC or gas mark 4). This step gets everything ready so the baking and cooking flows smoothly.

Step 2: Pierce each of the white and sweet potatoes several times with a fork. This helps steam escape so they bake evenly. Place them directly on a baking tray and pop them in the oven. Bake for about 1 hour, or until the flesh inside is nice and soft when you gently press with a fork.

Step 3: While the potatoes are baking, prepare your Brussels sprouts by peeling off the outer leaves and slicing them thinly. Dice the shallots and finely chop the garlic cloves.

Step 4: When the potatoes are done, carefully remove them from the oven and let them cool just enough so you can handle them safely. Slice them open to release steam and let them cool slightly—it makes scooping their flesh easier.

Step 5: Heat the olive oil in a frying pan over medium heat. Add the sliced Brussels sprouts and diced shallots. Sauté for 12 to 15 minutes until they are tender and slightly caramelized, stirring occasionally so they don’t burn.

Step 6: Warm the milk and butter together gently in a small saucepan so they combine into a smooth, warm mixture. This keeps the mash creamy and prevents it from cooling down too fast when mixing.

Step 7: Scoop the flesh of the white potatoes and sweet potatoes into two separate bowls, discarding their skins. Use a potato masher to mash each until smooth but still a bit fluffy.

Step 8: For the sweet potatoes, pour roughly one third of the warm milk mixture into the bowl. Add half of the sea salt flakes and half of the black pepper, then mix until smooth. Set this aside—you’ll be assembling soon.

Step 9: To the white potatoes, add most of the parmesan cheese (reserve a small amount for topping). Pour in the remaining warm milk and combine with the remaining salt and pepper. Stir well until smooth. Then fold in the sautéed Brussels sprouts and shallots gently but thoroughly.

Step 10: Now, it's time to assemble. In a baking dish, alternate dollops of the white potato and Brussels sprouts mixture with the sweet potato mash. Swirl them together gently to create a lovely marble effect. Sprinkle the remaining parmesan cheese on top.

Step 11: Place the baking dish back into the oven for about 15 minutes until the top is bubbling and golden. This final bake melds the flavors and gives the dish a wonderful warm finish.

Step 12: When ready to serve, you can optionally drizzle the colcannon with a little extra olive oil for added gloss and flavor. Then dig in and enjoy this comforting, colorful take on mashed potatoes!

Servings and Timing

This recipe generously serves 8 people, making it perfect for family gatherings or dinner parties. The prep time is about 15 minutes, primarily focused on peeling and dicing vegetables. The baking of the potatoes requires roughly 1 hour, followed by about 15 minutes of stove-top cooking and assembling. The final baking adds another 15 minutes. In total, plan for approximately 1 hour and 30 minutes from start to finish, with no additional resting time needed before serving.

How to Serve This The Best Colcannon Recipe (Irish Mashed Potatoes) Recipe

The image shows a round, silver pot filled with a baked dish that has around four visible layers. The top layer is golden-yellow melted cheese with some browned spots and green herbs scattered across, giving it a slightly lumpy texture. Beneath the cheese, there are soft, orange pieces that appear to be vegetables in a sauce, layered with creamy light yellow portions mixed with bits of green herbs. The pot is placed on a soft white cloth, and the whole scene rests on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

I love serving this colcannon piping hot right out of the oven, as the melty cheese and warm potatoes are simply irresistible at that temperature. It makes a perfect side dish to hearty mains like roast chicken, grilled sausages, or even a vegetarian lentil loaf. The combination of creamy, sweet, and green vegetable notes brings a bright, fulfilling balance to the plate.

For presentation, I often use a shallow baking dish so the marble effect is visible and appealing. Then I sprinkle a little extra fresh parsley on top for a burst of color. If you want to add a special touch, a drizzle of good-quality extra virgin olive oil right before serving adds a luscious shine and slight peppery note that elevates the dish further.

When it comes to drinks, I think this colcannon pairs beautifully with a crisp white wine like a sauvignon blanc or a light, fruity rosé. For a non-alcoholic option, a sparkling apple cider or a warm cup of herb tea complements the meal wonderfully. This dish is ideal for cozy family dinners, St. Patrick’s Day celebrations, or anytime you want to treat yourself and your loved ones to something wholesome and delicious.

Variations

One of my favorite things about this recipe is how versatile it is. If you want to switch things up, try substituting kale or collard greens instead of Brussels sprouts for a different green vegetable texture and flavor. You could also swap the parmesan for a sharper cheddar or a creamy gruyere for a slightly different cheese profile. It’s all about experimenting to find what you love.

If you’re aiming for a vegan version, you can replace the butter with vegan margarine or olive oil, and swap the milk for unsweetened almond or oat milk. Skip the parmesan or use a vegan parmesan alternative, and you’ll still get a wonderfully creamy and flavorful dish without any dairy.

For convenience, instead of baking the potatoes whole, you could peel and dice them and boil them until tender. This will reduce the cook time considerably but will lose a touch of that baked potato earthiness I adore. Also, sautéing the garlic along with the shallots adds a mild aromatic background that’s really inviting in this dish.

Storage and Reheating

Storing Leftovers

If you have leftovers, transfer them to an airtight container and refrigerate within two hours of cooking. The colcannon will keep beautifully in the fridge for up to 3-4 days. Make sure it’s cooled completely before sealing the container to preserve texture and flavor.

Freezing

This dish freezes quite well, which makes it perfect for meal prep. To freeze, portion the colcannon into freezer-safe containers or heavy-duty zip-top bags. Label with the date and freeze for up to 2 months. When you're ready to enjoy, thaw it overnight in the fridge before reheating for best results.

Reheating

To reheat, I recommend warming the colcannon gently in a covered baking dish in a moderate oven (about 325ºF/160ºC), stirring halfway through to heat evenly. You can also reheat it in a saucepan on the stove over low heat, adding a splash of milk to loosen the texture if needed. Avoid the microwave if possible, as it can make the mash dry or unevenly warmed. A little patience with reheating keeps it creamy and delicious.

FAQs

Can I use only white potatoes or only sweet potatoes for this recipe?

Absolutely! You can make this colcannon with all white potatoes for a more traditional flavor or all sweet potatoes for a sweeter, creamier mash. The mix just gives you the best of both worlds, but it’s flexible based on your preference or what you have on hand.

Do I have to bake the potatoes or can I boil them instead?

You can boil the potatoes if you’re short on time. Just peel and chop them into even chunks and boil until tender. Baking enhances the natural sweetness and texture, but boiling works well for a quicker version.

Is this recipe suitable for freezing and meal prep?

Yes! This colcannon freezes wonderfully. Portion it out into freezer-safe containers and thaw overnight before reheating. It’s a great dish to prepare ahead for busy days or special occasions.

Can I make this recipe vegan?

Definitely. Substitute the butter with a plant-based alternative or olive oil, use a non-dairy milk like almond or oat milk, and replace the parmesan with nutritional yeast or a vegan cheese. It still tastes delicious and creamy.

What main dishes pair well with colcannon?

I love serving colcannon alongside roasted meats like chicken, pork, or beef, as well as sausages. It’s also fantastic with vegetarian mains such as lentil loafs or mushroom-based dishes. The creamy, savory mash complements rich, hearty flavors beautifully.

Conclusion

I hope you feel inspired to try The Best Colcannon Recipe (Irish Mashed Potatoes) Recipe because it truly is one of my all-time favorite ways to enjoy mashed potatoes. It’s comforting yet colorful, simple yet packed with layers of flavor. Whether you’re making it for a cozy night in, a festive family meal, or to impress friends, this colcannon is a winner every single time. Happy cooking, and I can’t wait to hear what you think!