Timballo Spaghetti Casserole

This Italian-inspired chicken and spaghetti timballo has lots of pizza flavor thanks to pepperoni, mushrooms, black olives, and mozzarella cheese.

• Preparation Time: 20 mins
• Cooking Time: 40 mins
• Total Time: 60 mins
• Calories: 672 Calories

Ingredients

• 1 tablespoon olive oil
• 1 large onion, diced
• 3 cups shredded mozzarella cheese
• 1 (16 ounce) package spaghetti
• 1 tablespoon grated Parmesan cheese, or to taste
• 1 green pepper, diced
• 2 (24 ounce) jars marinara sauce
• 3 cups cooked chicken breast meat, diced
• 1 (7 ounce) package of sliced pepperoni, diced
• 1 (5 ounce) can mushroom pieces, drained
• 1 (3 ounce) can sliced black olives, drained

Recipe Instructions

Step 1

Preheat the oven to 350 degrees F (175 degrees C). Spread olive oil on the bottom of a cast iron skillet or large baking dish.

Step 2

Bring a large pot of lightly salted water to a boil. Cook spaghetti in boiling water, stirring occasionally, until cooked through but firm to the bite, about 12 minutes; drain.

Step 3

Stir spaghetti, marinara sauce, diced chicken, onion, pepperoni, green pepper, mushroom pieces, and black olives together in a large bowl; transfer into the prepared cast iron skillet. Top with a layer of mozzarella cheese and sprinkle with Parmesan cheese.

Step 4

Bake in the preheated oven until casserole is bubbling, chicken is cooked through, and cheese topping is lightly browned, about 30 minutes.