
This cheesy spaghetti sloppy joes blend brings together two beloved comfort classics in a way that turns simple pantry staples into a memorable meal. Ground beef cooks with onions before broken spaghetti simmers right in the sauce, then everything is topped with melted mozzarella and served on toasted garlic buns for a satisfying handheld feast.
I first made this on a night when I was scrambling to feed my family and ended up surprised by how much everyone loved it. My kids keep asking for it now, and it’s become a go-to for simple but satisfying dinners.
Ingredients
- Lean ground beef: for rich flavor without excess grease
- Fresh onions: to add natural sweetness and texture
- Broken spaghetti pieces: that soak up the savory juices perfectly
- Marinara sauce: as a flavorful base that ties it all together
- Quality shredded mozzarella: that melts creamy and smooth
- Sturdy hamburger buns: toasted with garlic butter to hold up to the saucy filling
Step-by-Step Instructions
- Sauté the Aromatics:
- Cook the diced onions and ground beef in butter over medium-high heat until the beef is browned and onions are soft, about 6 to 8 minutes. Drain excess fat for a less greasy filling.
- Simmer the Pasta:
- Add water and broken spaghetti to the pan, stirring gently. Cover and cook on medium-high heat for 4 minutes allowing the pasta to absorb liquid and flavors.
- Build the Sauce:
- Remove the lid and stir in marinara sauce plus salt, pepper, onion powder, and garlic powder. Reduce heat to low and simmer until pasta is tender and the sauce thickens slightly.
- Toast the Buns:
- Spread garlic butter on cut-side up hamburger buns and toast in a 400-degree oven for 4 to 6 minutes until golden brown. This prevents sogginess later.
- Melt the Cheese:
- Off the heat, fold shredded mozzarella into the hot pasta mixture until creamy and melted without graininess.
- Assemble and Serve:
- Spoon generous portions of cheesy spaghetti onto the toasted bun bottoms. Top with the other halves and serve immediately while hot and gooey.

Mozzarella cheese is my favorite part of this dish; it creates that luscious creamy texture that pulls everything together. It’s also a meal that reminds me of those hectic weeknights where improvising with what’s on hand turns into a family favorite.
Storage Tips
Leftovers keep well refrigerated for up to three days and taste even better after the flavors meld. Reheat gently with a splash of water to loosen the sauce. You can freeze the filling for up to three months, thaw overnight before reheating. Always toast fresh buns when serving again to keep them crisp.
Ingredient Substitutions
Ground turkey or chicken can replace beef for a lighter version. Try cheddar or provolone in place of mozzarella for a different cheese profile. Adding bell peppers or mushrooms with the onions adds extra vegetables and texture. A pinch of red pepper flakes gives a subtle heat if desired.
Serving Suggestions
Pair these sloppy joes with simple sides like coleslaw, potato chips, or a crisp green salad to balance richness. Cold milk works well for kids while iced tea or beer complements adult meals.

Recipe FAQs
- → Why do you break the spaghetti into pieces?
Breaking the spaghetti into smaller pieces makes it easier to scoop and serve on a bun without making a mess. It helps the pasta blend smoothly into the filling.
- → Can I use a different type of pasta?
Yes, you can substitute with small shapes like elbow macaroni, ditalini, or orzo. Just monitor the cooking time and add water if needed.
- → What if the mixture turns out too dry?
If it seems dry, simply add a splash of water or more marinara. The filling should be saucy enough to stay moist but not runny.
- → Can I make the filling ahead of time?
Absolutely. Prepare the spaghetti mixture in advance and reheat when ready. Toast fresh buns just before serving for the best texture.
- → What cheeses work well besides mozzarella?
Try cheddar, provolone, or a shredded Mexican blend for variety. Just be sure to stir them in off the heat so they melt smoothly.
- → How do I prevent soggy buns?
Toasting the buns with garlic butter helps them stay crisp and resist soaking up too much of the saucy filling.