Slow Cooker Ketchup Spaghetti

This Slow Cooker Ketchup Spaghetti is a nostalgic Depression Era recipe made with simple pantry staples that transform into a surprisingly delicious comfort food dinner. With just a handful of affordable ingredients, this easy slow cooker pasta recipe creates tender spaghetti coated in a rich, tangy, buttery tomato sauce.

Perfect for busy weeknights, tight grocery budgets, or anyone who loves vintage family recipes, this economical meal is proof that simple ingredients can create satisfying homemade dinners.

Why You’ll Love This Slow Cooker Ketchup Spaghetti

• Only 4 basic pantry ingredients
• Budget-friendly family dinner
• Easy dump-and-go slow cooker recipe
• Great for busy weeknights
• Kid-friendly comfort food
• Minimal preparation and cleanup
• Perfect for stretching your grocery budget
• Easy to customize with vegetables, cheese, or meat

Ingredients

• 12 ounces dry spaghetti, broken in half
• 2 cups ketchup
• 4 cups water
• 1 medium yellow onion, finely chopped
• 4 tablespoons unsalted butter
• 1 teaspoon salt (optional)
• ½ teaspoon black pepper (optional)

Instructions

1. Lightly grease a 4- to 6-quart slow cooker.
2. Spread the chopped onion evenly across the bottom.
3. Arrange the broken spaghetti over the onions.
4. Whisk together the ketchup, water, salt, and pepper until smooth.
5. Pour the sauce evenly over the spaghetti, making sure most noodles are submerged.
6. Dot the butter over the top.
7. Cover and cook on HIGH for 1½–2 hours or LOW for 3–3½ hours.
8. Stir gently halfway through cooking to separate the noodles.
9. Once the pasta is tender, toss everything together until coated in the glossy sauce.
10. Let stand on KEEP WARM for 5–10 minutes before serving.

Serving Suggestions

Serve this easy slow cooker spaghetti with:

• Garlic bread
• Fresh green salad
• Steamed vegetables
• Buttered toast
• Parmesan cheese
• Crushed red pepper flakes
• Dill pickles for a tangy contrast

Recipe Tips

• Stir once during cooking to prevent sticking.
• Add cream cheese at the end for a creamy version.
• Mix in cooked ground beef or turkey for extra protein.
• Bell peppers and celery add nutrition while keeping the recipe budget-friendly.
• A splash of pickle juice or yellow mustard creates an extra tangy flavor.

Storage

Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in the microwave or on the stovetop with a splash of water until hot.

Benefits of This Recipe

This Slow Cooker Ketchup Spaghetti is an excellent choice for families looking to save money without sacrificing comfort or flavor. It uses inexpensive pantry staples, requires very little hands-on work, and makes enough to feed the whole family. The slow cooker develops a rich, buttery tomato flavor while keeping the spaghetti tender and delicious. It’s an ideal recipe for meal planning, busy schedules, and anyone who enjoys vintage Depression Era cooking.