Roasted Butternut Squash Lasagna

Ingredients

• 1 butternut squash (peeled, seeded, and cut into 1-inch cubes)
• 1 tablespoon olive oil
• 1 tablespoon balsamic vinegar
• 1 handful sage leaves (chiffonade)
• 1/4 cup butter
• 1 small onion
• 2 cloves garlic (chopped)
• 1 handful sage leaves (chiffonade)
• salt and pepper to taste
• 1/4 cup all-purpose flour
• 3 cups milk
• pinch nutmeg
• salt and pepper to taste
• 9 lasagne noodles (cooked)
• 2 cups mozzarella cheese (grated)
• 1/2 cup grated parmigiano reggiano (grated)