Creamy Potato Leek Bake – Easy 35-Minute Dinner

There are some dinners that feel like a warm hug on a plate, and this Creamy Potato & Leek Bake is exactly that. I remember the first time I made it for my family – the kids were skeptical of the leeks, but the creamy, cheesy aroma won them over before the first bite. Now it's a regular in our weeknight rotation.

This dish is perfect for those busy evenings when you need something hearty and satisfying without a lot of fuss. It's all baked in one pan, so cleanup is a breeze. Plus, it's budget-friendly – potatoes and leeks are inexpensive and filling, making it a great choice for feeding a family on a budget.

Whether you're a seasoned cook or just starting out, this recipe is forgiving and flexible. You can easily swap in different cheeses or add some protein if you like. So, preheat your oven, and let's create some comforting magic together.

About the Ingredients

2 lbs (900g) Yukon Gold potatoes, thinly sliced (about 1/8-inch thick)

Yukon Golds hold their shape well and have a buttery flavor. You can substitute with Russets, but they may break down more.

2 large leeks (about 2 cups sliced), white and light green parts only

Leeks add a mild onion flavor. If you can't find leeks, use 1 large yellow onion, thinly sliced.

3 tablespoons (42g) unsalted butter, plus more for greasing

Butter adds richness. You can use olive oil for a dairy-free option.

2 cloves garlic, minced

Fresh garlic gives the best flavor. In a pinch, use 1/2 teaspoon garlic powder.

1 1/2 cups (360ml) heavy cream

Heavy cream makes it luscious. For a lighter version, use half-and-half or whole milk, but it will be less creamy.

1/2 cup (120ml) chicken or vegetable broth

Broth adds depth. Use low-sodium to control salt.

1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)

Thyme pairs beautifully with potatoes and leeks. You can also use rosemary.

1 teaspoon salt, plus more to taste

Salt enhances all the flavors. Adjust based on your dietary needs.

1/2 teaspoon black pepper, freshly ground

Fresh pepper adds a subtle kick. Adjust to taste.

1 1/2 cups (170g) shredded Gruyère cheese

Gruyère melts wonderfully and has a nutty taste. Substitute with Swiss, cheddar, or a mix.

1/2 cup (50g) grated Parmesan cheese

Parmesan adds a salty, savory note. Use Pecorino Romano for a sharper flavor.

Tips & Tricks

• For even cooking, slice your potatoes uniformly – a mandoline makes this easy and safe.
• Don't skip sautéing the leeks – it brings out their sweetness and removes excess moisture.
• Let the bake rest for 10 minutes after baking. This allows the sauce to thicken and makes serving easier.

Step-by-Step Instructions

1. Preheat and Prep

Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter. Thinly slice the potatoes and leeks (see tips).

2. Sauté Leeks and Garlic

In a large skillet, melt 3 tablespoons of butter over medium heat. Add the sliced leeks and cook for 5-7 minutes until softened and translucent, stirring occasionally. Add the minced garlic and cook for 1 minute more until fragrant.

3. Make the Cream Mixture

In a medium bowl, whisk together the heavy cream, broth, thyme, salt, and pepper. Set aside.

4. Layer the Potatoes

Arrange one-third of the potato slices in the prepared dish, slightly overlapping. Top with half of the leek mixture and sprinkle with one-third of the Gruyère. Repeat with another layer of potatoes, remaining leeks, and another third of cheese. Finish with a final layer of potatoes.

5. Pour and Top

Pour the cream mixture evenly over the potatoes. Gently press down with a spatula to ensure the liquid reaches all layers. Sprinkle the remaining Gruyère and all the Parmesan on top.

6. Bake Covered

Cover the dish with foil and bake for 30 minutes. The potatoes should be nearly tender when pierced with a fork.

7. Bake Uncovered

Remove the foil and bake for an additional 15-20 minutes, until the top is golden brown and the edges are bubbly. The potatoes should be completely tender and the sauce thickened.

8. Rest and Serve

Let the bake rest for 10 minutes before serving. This allows it to set, making it easier to slice. Garnish with fresh thyme if desired.

Delicious Variations

Add protein

Layer in cooked, crumbled bacon or diced ham between the potato layers.

Change the cheese

Use smoked gouda or sharp cheddar instead of Gruyère for a different flavor.

Make it veggie-loaded

Add a layer of sautéed spinach or mushrooms with the leeks.

How to Store Creamy Potato & Leek Bake

Frequently Asked Questions

I hope this Creamy Potato & Leek Bake brings warmth and smiles to your table. It's one of those dishes that feels like a hug in every bite. Try it tonight and let me know how your family likes it! Breathe, play, connect.

Creamy Potato & Leek Bake

Creamy Potato & Leek Bake: a comforting, cheesy one-pan dinner that's easy to make and loved by all.

★★★★½ 4.8 (132 ratings)

15 minPrep time45 minCook time6Servings385 kcalCalories

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🧂 Ingredients

• 2 lbs (900g) Yukon Gold potatoes, thinly sliced (about 1/8-inch thick)
• 2 large leeks (about 2 cups sliced), white and light green parts only
• 3 tablespoons (42g) unsalted butter, plus more for greasing
• 2 cloves garlic, minced
• 1 1/2 cups (360ml) heavy cream
• 1/2 cup (120ml) chicken or vegetable broth
• 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
• 1 teaspoon salt, plus more to taste
• 1/2 teaspoon black pepper, freshly ground
• 1 1/2 cups (170g) shredded Gruyère cheese
• 1/2 cup (50g) grated Parmesan cheese

📋 Instructions

1. 1Preheat and Prep — Preheat your oven to 375°F (190°C). Grease a 9×13-inch baking dish with butter. Thinly slice the potatoes and leeks (see tips).
2. 2Sauté Leeks and Garlic — In a large skillet, melt 3 tablespoons of butter over medium heat. Add the sliced leeks and cook for 5-7 minutes until softened and translucent, stirring occasionally. Add the minced garlic and cook for 1 minute more until fragrant.
3. 3Make the Cream Mixture — In a medium bowl, whisk together the heavy cream, broth, thyme, salt, and pepper. Set aside.
4. 4Layer the Potatoes — Arrange one-third of the potato slices in the prepared dish, slightly overlapping. Top with half of the leek mixture and sprinkle with one-third of the Gruyère. Repeat with another layer of potatoes, remaining leeks, and another third of cheese. Finish with a final layer of potatoes.
5. 5Pour and Top — Pour the cream mixture evenly over the potatoes. Gently press down with a spatula to ensure the liquid reaches all layers. Sprinkle the remaining Gruyère and all the Parmesan on top.
6. 6Bake Covered — Cover the dish with foil and bake for 30 minutes. The potatoes should be nearly tender when pierced with a fork.
7. 7Bake Uncovered — Remove the foil and bake for an additional 15-20 minutes, until the top is golden brown and the edges are bubbly. The potatoes should be completely tender and the sauce thickened.
8. 8Rest and Serve — Let the bake rest for 10 minutes before serving. This allows it to set, making it easier to slice. Garnish with fresh thyme if desired.

👨‍🍳 Chef's Note: For a crispy top, you can broil for the last 2-3 minutes, but watch closely to avoid burning.

Servings: 6

Cuisine: American

Course: Dinner

Nutrition (per serving): 385 kcal · 12g protein · 28g carbs · 26g fat

Written by Aisha Okafor
Aisha writes about mindful parenting and creative play for children, drawing from her experiences as a mother in a busy household. She offers low-prep activity ideas and gentle discipline strategies.