Simple and Delicious Butternut Squash Gratin with Leeks and Sage - Yummy Gusto

Ingredients

• Two pounds of butternut squash, peeled and cut into very thin slices (1/8 inch)
• 2 medium leeks, sliced thinly
• 4 garlic cloves, roughly chopped
• 15 sage leaves, minced (set aside 8 extra leaves if you want a crispy topping)
• 2 tablespoons of butter or olive oil
• 1/2 teaspoon each of salt and black pepper
• 1/2 teaspoon onion powder (use this only if you want an extra flavor boost)
• 1/2 teaspoon nutmeg
• 1 cup of heavy cream or coconut milk (perfect if you're avoiding dairy)
• 1/4 cup of water
• 3 ounces of gruyere cheese (substitute with parmesan or a vegan cheese option)
• 1/2 cup of chopped walnuts