Roasted Pumpkin and Smoked Blue Cheese Lasagna

INGREDIENTS

• 1 pie pumpkin
• 1 tablespoon olive oil
• 1 small red onion
• ———————–
• 1 cup ricotta
• 1 egg white
• ¼ teaspoon salt
• ¼ teaspoon pepper
• 2 tablespoons butter
• 2 tablespoons flour
• 1 cup milk
• ½ cup crumbled smoked blue cheese
• 6 lasagna noodles
• ½ cup shredded mozzarella cheese