▢ 1 lb box ziti pasta
▢½ medium red onion, cut into small cubes
▢½ medium green bell pepper, cut into small cubes
▢1 large garlic clove, minced
▢1 teaspoon dried oregano
▢1 teaspoon salt
▢½ teaspoon ground black pepper
▢1 pound lean ground beef
▢2 tablespoons vegetable oil
▢1 jar marinara sauce, separate ½ cup sauce and set aside
▢15 oz container ricotta cheese, separated
▢2 cups shredded mozzarella cheese, separated