Butternut Squash Gratin with Goat Cheese and Hazelnuts - Oryana

Ingredients

• 3 1/2 pounds butternut squash (about 2 medium), peeled, seeded, cut into 3/4-inch cubes (8 cups)
• 2 tablespoons olive oil
• Seasalt and black pepper to taste
• 4 tablespoons (1/2 stick) butter, divided
• 3 cups sliced leeks (white and pale green parts only)
• 1 teaspoon sage
• 1 5.5 oz log soft goat cheese
• 1 cup heavy whipping cream
• 1/2 cup hazelnuts, toasted, husked, chopped