Can I make Slow Cooker Tomato Basil Baked Ziti Casserole ahead?

Yes. Prep the ingredients or cook the full dish ahead, then reheat gently so the texture stays close to freshly made.

What cookware works best?

Use a slow cooker and avoid crowding so the recipe cooks evenly.

How do I know it is done?

Follow the recipe timing, then check the main ingredient for tenderness, bubbling, browning, or safe doneness before serving.

Can I adjust the seasoning?

Yes. Taste near the end and adjust salt, acid, herbs, or heat in small amounts.

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Casseroles

Slow Cooker Tomato Basil Baked Ziti Casserole

Name: Slow Cooker Tomato Basil Baked Ziti Casserole
Prep time: 15 min
Cook time: 180 min
Total time: 195 min
Yield: 6 servings
Cuisine: Italian-Inspired
Ingredients: 1 pound dry ziti pasta; 4 cups marinara sauce (homemade or store-bought); 1 ½ cups part-skim mozzarella cheese, shredded; ½ cup grated Parmesan cheese; 1 cup ricotta cheese; 1 medium onion, finely chopped; 3 cloves garlic, minced; 2 teaspoons dried basil or ¼ cup fresh basil, chopped; 1 teaspoon dried oregano; ½ teaspoon red pepper flakes (optional); 1 ½ cups water or vegetable broth; Salt and freshly ground black pepper, to taste; 2 tablespoons olive oil

By PanPotPlates Test KitchenReviewed by PanPotPlates Editorial TeamPublished Apr 21, 2026 · Updated May 12, 2026

Italian-Inspired 195 mins slowcookeronepotfamilydinnereasycomfortfoodfreezablevegetarianmealprepbudget-friendly

Slow Cooker Tomato Basil Baked Ziti Casserole is a practical PanPotPlates recipe built for dependable weeknight cooking.

Prep 15 min

Cook 180 min

Total 195 min

Servings 6

Difficulty easy

Cuisine Italian-Inspired

Ingredients

Servings 6

1 pound dry ziti pasta
4 cups marinara sauce (homemade or store-bought)
1 ½ cups part-skim mozzarella cheese, shredded
½ cup grated Parmesan cheese
1 cup ricotta cheese
1 medium onion, finely chopped
3 cloves garlic, minced
2 teaspoons dried basil or ¼ cup fresh basil, chopped
1 teaspoon dried oregano
½ teaspoon red pepper flakes (optional)
1 ½ cups water or vegetable broth
Salt and freshly ground black pepper, to taste
2 tablespoons olive oil

Ingredients for Slow Cooker Tomato Basil Baked Ziti Casserole

Instructions

Heat olive oil in a medium skillet over medium heat. Add the finely chopped onion and sauté until softened and translucent, about 3-4 minutes.
Add minced garlic, dried basil, oregano, and red pepper flakes if using. Cook, stirring frequently, until fragrant, about 1 minute.
Pour marinara sauce into the skillet and stir to combine. Remove from heat.
In the slow cooker pot, combine dry ziti pasta and water or vegetable broth.
Pour the tomato basil sauce mixture over the pasta. Stir gently to coat the pasta evenly with the sauce.
Add dollops of ricotta cheese evenly throughout the mixture. Fold gently to incorporate the ricotta, leaving creamy pockets visible for a rich texture.
Sprinkle 1 cup of shredded mozzarella evenly over the top.
Cover the slow cooker and cook on LOW for 2½ to 3 hours, until the pasta is tender and the sauce thickens.
About 15 minutes before serving, sprinkle the remaining ½ cup mozzarella and Parmesan cheese over the casserole. Cover and continue cooking until the cheese is melted and bubbly.
Once cooked, stir gently to combine the melted cheese throughout. Season with salt and freshly ground black pepper to taste.
Garnish with fresh chopped basil if desired and serve hot.

Slow Cooker Tomato Basil Baked Ziti Casserole cooking in the recommended pan or pot

Tips

Pan Or Pot Required

This Slow Cooker Tomato Basil Baked Ziti Casserole is designed for simple, hands-off cooking using a slow cooker (crockpot) .

Cookware Size Guidance

For best results, use a slow cooker with a capacity of 5 to 6 quarts for the Slow Cooker Tomato Basil Baked Ziti Casserole .

Cookware Swap Guidance

This comforting casserole is crafted for the slow cooker to create tender baked ziti with minimal active prep.

Leftovers Quality

Reheat gently and add a splash of liquid when needed to keep the texture moist and tender.

Frequently Asked Questions

Can I make Slow Cooker Tomato Basil Baked Ziti Casserole ahead?: Yes. Prep the ingredients or cook the full dish ahead, then reheat gently so the texture stays close to freshly made.
What cookware works best?: Use a slow cooker and avoid crowding so the recipe cooks evenly.
How do I know it is done?: Follow the recipe timing, then check the main ingredient for tenderness, bubbling, browning, or safe doneness before serving.
Can I adjust the seasoning?: Yes. Taste near the end and adjust salt, acid, herbs, or heat in small amounts.

Adapt the Slow Cooker Tomato Basil Baked Ziti Casserole to your dietary preferences or needs with these ingredient swaps:

Gluten-Free: Replace regular dry ziti with gluten-free pasta varieties (rice, corn, quinoa-based) that hold texture well in slow cooking.
Dairy-Free: Use plant-based cheeses like cashew-based ricotta and vegan shredded mozzarella to keep the dish dairyfree and vegan-friendly.
Vegan: Ensure marinara sauce is free of animal products, swap all cheeses for dairy-free alternatives, and use vegan vegetable broth. Omit Parmesan garnish.
Low Sodium: Choose low-sodium marinara and broth. Adjust salt carefully during seasoning to suit taste.
Protein Boost: Add cooked lentils or canned white beans to the sauce for extra vegetarian protein and heartiness.
Herb Variations: Fresh oregano or an Italian herb blend can substitute dried herbs for brightness and complexity.

Storage and Reheating

Cool Slow Cooker Tomato Basil Baked Ziti Casserole before storing. Refrigerate leftovers in an airtight container for up to 4 days.

Freeze portions for longer storage when the ingredients are freezer-friendly. Reheat gently with a splash of liquid if the dish looks dry.

Read related air fryer guides and cooking tips.

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Slow Cooker Tomato Basil Baked Ziti Casserole

Recipe Details

Ingredients

Instructions