Slow Cooker Tuna Noodle Casserole Recipe is a comforting and easy meal for busy days. Creamy, cheesy and full of tender noodles, this casserole is a classic family favorite. Using a slow cooker makes it simple and hands-off, letting flavors develop while you focus on other tasks.
It’s perfect for lunch, dinner or potlucks. This recipe is hearty, flavorful and kid-friendly. Learn how to make Slow Cooker Tuna Noodle Casserole step by step for a warm, delicious meal that everyone will love.
The Secret Behind This Delicious Slow Cooker Tuna Noodle Casserole
The secret to a perfect Slow Cooker Tuna Noodle Casserole is layering flavors and using the right ingredients. Cream of mushroom soup, cream of chicken soup and milk create a rich and creamy sauce.
Tender noodles absorb the sauce while cooking slowly, making each bite comforting. Adding onions, peas and shredded cheese brings extra flavor, color and texture.
Tuna adds protein, making the casserole hearty and filling. Cooking it slowly allows the sauce to thicken and the noodles to stay soft, resulting in a perfectly creamy casserole every time.

Recipe Card Info
- Recipe Name: Slow Cooker Tuna Noodle Casserole
- Servings: 6
- Prep Time: 15 mins
- Cook Time: 2.5 hours
- Total Time: 2 hours 45 mins
- Course: Main / Dinner / Lunch
- Cuisine: American
- Calories: 400 kcal per serving
Equipment List
- Slow cooker (4–6 quart)
- Knife
- Cutting board
- Measuring cups and spoons
- Mixing bowl
- Spoon or spatula
- Cheese grater (optional)
Ingredients You Need for Slow Cooker Tuna Noodle Casserole
- 12 oz egg noodles (uncooked)
- 2 cans (5 oz each) tuna, drained
- 1 can (10.5 oz) cream of mushroom soup
- 1 can (10.5 oz) cream of chicken soup
- 1 cup milk
- 1 small onion, chopped
- 1 cup frozen peas
- 1 ½ cups shredded cheddar cheese
- ½ tsp black pepper
- ½ tsp garlic powder
- ½ tsp onion powder
- Optional topping: ½ cup crushed crackers or breadcrumbs mixed with 2 tbsp butter
Instructions
- Prepare the Ingredients
Chop the onion. Drain tuna. Measure noodles, soups, milk and cheese. Pre-measure spices. - Mix the Sauce
In a bowl, combine cream of mushroom soup, cream of chicken soup, milk, garlic powder and onion powder. - Add to Slow Cooker
Place uncooked noodles in the slow cooker. Add chopped onion, frozen peas and drained tuna on top. - Pour Sauce Over Noodles
Evenly pour the soup mixture over noodles, ensuring all pieces are coated for creamy results. - Season the Casserole
Sprinkle black pepper over the mixture. Mix gently to combine ingredients without breaking noodles. - Cook on Low
Cover and cook on low for 2 to 2.5 hours. Check after 2 hours; noodles should be tender. - Add Cheese
About 15 minutes before serving, sprinkle shredded cheddar cheese over the top. Cover to melt completely. - Optional Topping
For a crispy topping, mix crushed crackers or breadcrumbs with butter and sprinkle over the cheese before finishing. - Check Doneness
Make sure noodles are tender, sauce is creamy and casserole is heated through. Stir gently if needed. - Serve Warm
Scoop portions into bowls. Garnish with extra cheese or parsley if desired. Enjoy this comforting meal.
Expert Tips & Variations
- Use whole wheat or gluten-free noodles for a healthier option.
- Swap peas for broccoli or carrots for different vegetables.
- Make ahead by assembling in the slow cooker the night before; cook in the morning.
- Add a splash of soy sauce or Worcestershire sauce for deeper flavor.
- Sprinkle extra shredded cheese on each serving for cheesier casserole.
Nutrition Information
| Nutrient | Amount per Serving |
|---|---|
| Calories | 400 kcal |
| Protein | 25 g |
| Carbohydrates | 38 g |
| Fat | 18 g |
| Fiber | 3 g |
| Sugar | 5 g |
Serving Suggestions
Serve Slow Cooker Tuna Noodle Casserole with a crisp green salad, garlic bread or roasted vegetables. This makes a complete, satisfying meal for lunch or dinner. It’s also great for potlucks or family gatherings because it’s easy to prepare and serve.
Storage & Reheating Tips
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- Reheat in a microwave or oven with a splash of milk to keep it creamy.
- Do not freeze the casserole; noodles may become mushy after thawing.
- Assemble but do not cook in advance; keep covered in refrigerator and cook the next day.

Slow Cooker Tuna Noodle Casserole Recipe
Ingredients
- 12 oz egg noodles uncooked
- 2 cans 5 oz each tuna, drained
- 1 can 10.5 oz cream of mushroom soup
- 1 can 10.5 oz cream of chicken soup
- 1 cup milk
- 1 small onion chopped
- 1 cup frozen peas
- 1 ½ cups shredded cheddar cheese
- ½ tsp black pepper
- ½ tsp garlic powder
- ½ tsp onion powder
- Optional topping: ½ cup crushed crackers or breadcrumbs mixed with 2 tbsp butter
Instructions
Prepare the Ingredients
- Chop the onion. Drain tuna. Measure noodles, soups, milk, and cheese. Pre-measure spices.
Mix the Sauce
- In a bowl, combine cream of mushroom soup, cream of chicken soup, milk, garlic powder, and onion powder.
Add to Slow Cooker
- Place uncooked noodles in the slow cooker. Add chopped onion, frozen peas, and drained tuna on top.
Pour Sauce Over Noodles
- Evenly pour the soup mixture over noodles, ensuring all pieces are coated for creamy results.
Season the Casserole
- Sprinkle black pepper over the mixture. Mix gently to combine ingredients without breaking noodles.
Cook on Low
- Cover and cook on low for 2 to 2.5 hours. Check after 2 hours; noodles should be tender.
Add Cheese
- About 15 minutes before serving, sprinkle shredded cheddar cheese over the top. Cover to melt completely.
Optional Topping
- For a crispy topping, mix crushed crackers or breadcrumbs with butter and sprinkle over the cheese before finishing.
Check Doneness
- Make sure noodles are tender, sauce is creamy, and casserole is heated through. Stir gently if needed.
Serve Warm
- Scoop portions into bowls. Garnish with extra cheese or parsley if desired. Enjoy this comforting meal.
Notes
- Use whole wheat or gluten-free noodles for a healthier option.
- Swap peas for broccoli or carrots for different vegetables.
- Make ahead by assembling in the slow cooker the night before; cook in the morning.
- Add a splash of soy sauce or Worcestershire sauce for deeper flavor.
- Sprinkle extra shredded cheese on each serving for cheesier casserole.
FAQs about Slow Cooker Tuna Noodle Casserole
Q1: Can I use canned chicken instead of tuna?
Yes, canned chicken works well. Drain it and use the same quantity. Flavor will be slightly different but still delicious.
Q2: Can I prepare this casserole ahead of time?
Yes, assemble ingredients in the slow cooker and refrigerate overnight. Cook the next day on low heat.
Q3: Can I use fresh vegetables instead of frozen?
Yes, finely chop fresh peas, carrots or broccoli. Add at the beginning of cooking for best texture.
Q4: Can I make this gluten-free?
Yes, use gluten-free egg noodles and ensure soups are gluten-free. Everything else stays the same.
Q5: How do I make the topping crispy?
Mix crushed crackers or breadcrumbs with melted butter. Sprinkle on top 15 minutes before serving to toast lightly.
Conclusion
Slow Cooker Tuna Noodle Casserole Recipe is creamy, comforting and easy to make. Perfect for weeknight dinners, potlucks or family meals, this casserole combines tender noodles, savory tuna, creamy sauces and vegetables for a hearty meal.
You now know how to make Slow Cooker Tuna Noodle Casserole step by step. Use expert tips and variations to customize flavors, add vegetables, or make it cheesier. Serve warm for a delicious, satisfying meal everyone will love.
With Slow Cooker Tuna Noodle Casserole Recipe, you can enjoy a comforting homemade meal with minimal effort. Make it for your family or friends and experience the classic, creamy flavors of this timeless dish.

Sofia Lane is a food lover who loves cooking and sharing easy, tasty recipes. She believes in making cooking simple and fun for everyone. On DiveCrave, Sofia shares her favorite meals, desserts and treats that anyone can make at home.













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