Easy Cheesy Baked Tortellini

Ingredients (15)

• 1 tablespoon olive oil
• 1 small onion,
• 3 cloves garlic,
• 6 cups fresh spinach leaves
• 3 1/2 cups Marinara Sauce
• 1 15 oz can diced tomatoes
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• Dash of crushed red pepper flakes
• 2 tablespoons freshly chopped basil
• Salt and black pepper,
• 2 (20 oz packages) refrigerated cheese tortellini
• 2 cups shredded mozzarella cheese,
• 1/2 cup shredded Parmesan cheese,
• Freshly chopped basil,