How to Cook Vegetable Lasagna

Ingredients

• 1 box of lasagna noodles
• 1 jar of marinara sauce
• 1 zucchini, sliced
• 1 yellow squash, sliced
• 1 red bell pepper, sliced
• 1 yellow onion, sliced
• 2 cups of spinach
• 2 cups of ricotta cheese
• 2 cups of shredded mozzarella cheese
• 1/2 cup of grated Parmesan cheese
• Salt and pepper to taste