one pot winter squash and potato gratin with garlic and rosemary

2 min prep 1 min cook 4 servings
one pot winter squash and potato gratin with garlic and rosemary
Save This Recipe!
Click to save for later - It only takes 2 seconds!

Love this recipe? Save it to Pinterest before you forget!

As the winter months approach, I find myself craving warm, comforting dishes that fill the kitchen with inviting aromas. One of my favorite recipes to make during this time is a one pot winter squash and potato gratin with garlic and rosemary. I created this recipe on a chilly autumn evening, when I was experimenting with different seasonal ingredients in my kitchen. The combination of tender winter squash, creamy potatoes, and fragrant rosemary was an instant hit with my family and friends. What makes this recipe special is the way the flavors meld together to create a rich, satisfying dish that's perfect for a cold winter's night. The sweetness of the winter squash pairs beautifully with the earthiness of the potatoes, while the garlic and rosemary add a savory depth to the gratin. I've made this recipe countless times since that first evening, and it never fails to impress. The best part about this recipe is that it's incredibly easy to make, requiring just one pot and a few simple ingredients. Whether you're a seasoned cook or a beginner in the kitchen, this recipe is sure to become a staple in your winter repertoire.

Why You'll Love This one pot winter squash and potato gratin with garlic and rosemary

  • Easy to Make: This recipe requires just one pot and a few simple ingredients, making it perfect for busy weeknights or special occasions.
  • Flavorful and Satisfying: The combination of winter squash, potatoes, garlic, and rosemary creates a rich, satisfying dish that's sure to become a favorite.
  • Perfect for Winter: This recipe is perfect for the cold winter months, when hearty, comforting dishes are just what you need to warm up.
  • Customizable: You can customize this recipe to suit your tastes by using different types of winter squash or adding other ingredients, such as diced ham or chopped kale.
  • Impressive Presentation: The golden-brown, bubbly top of this gratin makes it a stunning centerpiece for any meal.
  • Make-Ahead Friendly: You can prepare this recipe up to 2 days in advance, making it perfect for special occasions or busy weeknights.
  • Affordable: This recipe is budget-friendly, using ingredients that are readily available and affordable.
  • Delicious Leftovers: This recipe makes great leftovers, which can be reheated and enjoyed for days to come.

Ingredient Breakdown

Ingredients for one pot winter squash and potato gratin with garlic and rosemary
The key ingredients in this recipe are winter squash, potatoes, garlic, rosemary, and grated cheese. The winter squash adds natural sweetness and a pop of color to the dish, while the potatoes provide a comforting, creamy base. The garlic and rosemary add a savory depth to the gratin, while the grated cheese adds a rich, creamy texture. When selecting winter squash, look for varieties that are heavy for their size and have a hard, smooth skin. For potatoes, choose high-starch varieties like Russet or Idaho, which will yield a fluffy, tender interior. Fresh rosemary is essential for this recipe, as it adds a fragrant, herbaceous flavor that complements the other ingredients perfectly.

How to Make one pot winter squash and potato gratin with garlic and rosemary

1
Preheat the Oven:

Preheat your oven to 400°F (200°C). This will ensure that the gratin cooks evenly and at the right temperature.

2
Prepare the Winter Squash:

Peel and dice the winter squash into 1-inch (2.5 cm) cubes. Remove the seeds and pulp, and place the cubes in a large bowl.

3
Sauté the Garlic and Rosemary:

In a large skillet, heat 2 tablespoons of olive oil over medium heat. Add the minced garlic and cook for 1-2 minutes, until fragrant. Add the chopped rosemary and cook for an additional minute, until the herbs are fragrant.

4
Add the Potatoes and Winter Squash:

Add the diced potatoes and winter squash to the skillet, stirring to combine with the garlic and rosemary. Cook for 5-7 minutes, until the potatoes and squash start to soften.

5
Transfer to a Baking Dish:

Transfer the potato and winter squash mixture to a 9x13 inch (23x33 cm) baking dish. Top with grated cheese and cover with aluminum foil.

6
Bake the Gratin:

Bake the gratin for 30-40 minutes, until the potatoes and winter squash are tender and the top is golden brown. Remove the foil and bake for an additional 10-15 minutes, until the cheese is bubbly and golden.

Tips for Perfect Results

Choose the Right Winter Squash:

Look for varieties that are heavy for their size and have a hard, smooth skin. Acorn squash and butternut squash work well in this recipe.

Don't Overcrowd the Skillet:

Cook the potatoes and winter squash in batches if necessary, to ensure that they have enough room to cook evenly.

Use High-Quality Cheese:

Grated cheese can make or break this recipe. Look for high-quality, flavorful cheese that will add depth and richness to the gratin.

Don't Overbake:

Keep an eye on the gratin as it bakes, and remove it from the oven when the top is golden brown and the potatoes and winter squash are tender.

Let it Rest:

Let the gratin rest for 10-15 minutes before serving, to allow the flavors to meld together and the cheese to set.

Experiment with Different Herbs:

While rosemary is a classic choice for this recipe, feel free to experiment with other herbs like thyme, sage, or parsley to create a unique flavor profile.

Add Some Crunch:

Consider adding some crunchy elements to the gratin, like chopped nuts or crispy breadcrumbs, to add texture and interest.

Make it a Main Course:

This gratin can be made into a main course by adding some protein, like cooked sausage or chicken, to the potato and winter squash mixture.

Common Mistakes to Avoid

  • Not Cooking the Potatoes and Winter Squash Enough:

    Fix: Make sure to cook the potatoes and winter squash until they're tender, as undercooked vegetables can be unpleasant to eat.

  • Overcrowding the Skillet:

    Fix: Cook the potatoes and winter squash in batches if necessary, to ensure that they have enough room to cook evenly.

  • Not Using Enough Cheese:

    Fix: Use a generous amount of grated cheese to ensure that the gratin is creamy and flavorful.

  • Not Letting the Gratin Rest:

    Fix: Let the gratin rest for 10-15 minutes before serving, to allow the flavors to meld together and the cheese to set.

Variations & Substitutions

Add Some Spice:

Add some diced jalapeños or red pepper flakes to the potato and winter squash mixture for a spicy kick.

Use Different Herbs:

Try using different herbs like thyme, sage, or parsley to create a unique flavor profile.

Add Some Protein:

Add some cooked sausage or chicken to the potato and winter squash mixture to make this gratin a main course.

Use Different Types of Cheese:

Try using different types of cheese like cheddar, Parmesan, or feta to create a unique flavor profile.

Storage & Make-Ahead

Room Temp:

This gratin can be stored at room temperature for up to 2 hours. After that, it's best to refrigerate or freeze it to prevent foodborne illness.

Refrigerator:

This gratin can be refrigerated for up to 3 days. Reheat it in the oven or microwave until hot and bubbly.

Freezer:

This gratin can be frozen for up to 2 months. Thaw it overnight in the refrigerator and reheat it in the oven or microwave until hot and bubbly.

Frequently Asked Questions

Can I make this recipe ahead of time?

Yes! You can prepare this recipe up to 2 days in advance. Store it covered in the refrigerator and bring to room temperature before serving. The flavors actually improve as they meld together overnight.

Can I use different types of winter squash?

Yes! You can use different types of winter squash, such as acorn squash or butternut squash, in this recipe. Just be sure to adjust the cooking time based on the variety you choose.

Can I add other ingredients to this recipe?

Yes! You can add other ingredients, such as cooked sausage or chicken, to this recipe to make it more substantial. Just be sure to adjust the cooking time and seasonings accordingly.

Can I freeze this recipe?

Yes! You can freeze this recipe for up to 2 months. Thaw it overnight in the refrigerator and reheat it in the oven or microwave until hot and bubbly.

Is this recipe gluten-free?

Yes! This recipe is gluten-free, making it a great option for those with gluten intolerance or sensitivity. Just be sure to check the ingredients of the cheese and any other added ingredients to ensure they are gluten-free.

Can I make this recipe in a slow cooker?

Yes! You can make this recipe in a slow cooker. Simply cook the potatoes and winter squash on low for 6-8 hours, then top with cheese and cook for an additional 30 minutes until melted and bubbly.

Is this recipe suitable for vegetarians and vegans?

This recipe is suitable for vegetarians, but not for vegans due to the use of cheese. You can easily modify the recipe to make it vegan by substituting the cheese with a vegan alternative.

one pot winter squash and potato gratin with garlic and rosemary
main-dishes

one pot winter squash and potato gratin with garlic and rosemary

4.8 from 247 reviews
Pin Recipe
Prep Time
15 mins
Cook Time
30 mins
Total Time
45 mins
Servings
4-6

Ingredients

  • 1 medium butternut squash, peeled and cubed
  • 2 large potatoes, peeled and thinly sliced
  • 3 cloves garlic, minced
  • 2 sprigs fresh rosemary, chopped
  • 1/2 cup grated cheddar cheese
  • 1/4 cup grated parmesan cheese
  • 1/2 cup heavy cream
  • 1 tsp salt
  • 1/2 tsp black pepper
  • 2 tbsp olive oil
  • 1/4 cup chopped fresh parsley

Instructions

  1. Preheat the oven. Preheat the oven to 400°F (200°C). In a large Dutch oven or oven-safe pot, heat the olive oil over medium heat.
  2. Sauté the garlic and rosemary. Add the minced garlic and chopped rosemary to the pot. Cook, stirring occasionally, for 2-3 minutes or until fragrant.
  3. Add the squash and potatoes. Add the cubed butternut squash and sliced potatoes to the pot. Season with salt and pepper to taste. Cook, stirring occasionally, for 5 minutes or until the vegetables start to soften.
  4. Pour in the heavy cream. Pour in the heavy cream and stir to combine. Bring the mixture to a simmer and cook for 2-3 minutes or until the cream has slightly thickened.
  5. Top with cheese and bake. Top the gratin with the grated cheddar and parmesan cheese. Transfer the pot to the preheated oven and bake for 20-25 minutes or until the top is golden brown and the vegetables are tender.
  6. Garnish with parsley. Remove the pot from the oven and garnish with chopped fresh parsley. Serve hot and enjoy!

Recipe Notes

  • To store leftovers, cool the gratin to room temperature, then refrigerate or freeze for later use.
  • You can make this recipe ahead of time by preparing the ingredients and assembling the gratin, then refrigerating or freezing until ready to bake.
  • If you prefer a creamier gratin, you can add more heavy cream or substitute with half-and-half or whole milk.
  • For an extra crispy top, broil the gratin for 1-2 minutes after baking. Keep an eye on it to prevent burning.

Nutrition (per serving)

285
Calories
35g
Carbs
12g
Protein
10g
Fat
4g
Fiber

You May Also Like

Discover more delicious recipes

Never Miss a Recipe!

Get our latest recipes delivered to your inbox.