Heart-Healthy Butternut Squash Lasagna (Low-Sodium, Creamy)

Ingredients

• 1 Tbsp olive oil
• 1 butternut squash (2 lbs), peeled, seeded and cut into 1-inch cubes
• Black pepper to taste
• 1/2 cup water
• 2 Tbsp unsalted butter
• 3 Tbsp all-purpose flour
• 3 cups skim milk
• 1/8 tsp nutmeg
• 1 cup fresh basil leaves
• 2/3 lb whole wheat lasagna noodles
• 2 1/2 cups mozzarella cheese
• 2 Tbsp grated Romano cheese