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Instructions:
- Cook the pasta:
Bring a large pot of salted water to a boil. Cook the pasta until al dente, according to package instructions. Drain and set aside.
- Brown the beef:
In a large skillet over medium heat, heat olive oil. Add diced onion and cook until softened, about 3 minutes. Stir in ground beef and garlic, and cook until browned. Drain any excess grease.
- Add flavor:
Stir in ketchup, mustard, salt, and pepper. Simmer for 2–3 minutes until well combined. Remove from heat.
- Mix the sauce:
Add sour cream to the beef mixture and stir until creamy. Fold in the cooked pasta and 1½ cups of shredded cheddar cheese.
- Assemble the bake:
Transfer the mixture into a greased 9×13-inch baking dish. Top evenly with the remaining ½ cup cheddar cheese and the crumbled bacon.
- Bake:
Preheat oven to 375°F (190°C). Bake uncovered for 15–20 minutes, or until hot and bubbly with golden melted cheese on top.
- Serve:
Allow to cool for 5 minutes, then scoop into bowls and serve warm.
Variations:
- Add chopped dill pickles or a drizzle of pickle juice for a true cheeseburger tang.
- Swap ketchup and mustard for BBQ sauce or Thousand Island dressing for a bold twist.
- Stir in sautéed mushrooms, green onions, or diced tomatoes for added depth.
- Use ground turkey or chicken for a lighter version.
Tips:
- Cook pasta just shy of al dente—it will finish softening as it bakes.
- Use sharp cheddar for maximum flavor impact.
- To make ahead, prepare up to baking step, cover, and refrigerate. Bake when ready, adding 5–10 extra minutes to the cook time.
- Store leftovers in an airtight container and reheat in the oven or microwave for quick lunches.