Slow Cooker Cheddar Chili Mac brings beefy chili and cheesy pasta together in one hearty bowl. Kidney beans, tomatoes, and a little chili spice give it plenty of flavor. The macaroni goes in near the end so it stays tender without turning mushy. Sharp cheddar melts into the sauce, with a small sprinkle saved for each serving.
Why I Love This Recipe
This is the kind of dinner that feels cozy without needing a long list of fancy ingredients. Most of the cooking happens under the lid, and the final steps are simple. You get the rich taste of chili with enough pasta and cheese to make every spoonful feel satisfying.
- Mostly hands-off: Once the beef is browned, the slow cooker takes over.
- A hearty bowl: Beef, beans, and pasta make a filling main dish.
- Real cheddar flavor: Sharp cheddar adds richness without a processed cheese sauce.
- Easy heat control: Mild chili powder keeps the base gentle; you can choose a hotter blend if you like.
What You’ll Need
- Servings: 6 generous servings
- Prep Time: 15 minutes
- Cook Time: 4 hours 45 minutes to 5 hours, including browning, on the high setting
- Total Time: 5 hours to 5 hours 15 minutes
- Slow Cooker: 6-quart oval slow cooker
Ingredients
- 1 pound 90% lean ground beef
- 1 medium onion, finely diced (about 1 cup)
- 1 medium red bell pepper, diced (about 1 cup)
- 3 garlic cloves, minced
- 1 tablespoon mild American chili powder, a spice blend rather than pure ground chile
- 2 teaspoons ground cumin
- 1 teaspoon smoked paprika
- 1 teaspoon dried oregano
- 1/2 teaspoon fine salt
- 1/4 teaspoon ground pepper
- 1 can (28 ounces) crushed tomatoes, undrained
- 1 can (15 ounces) kidney beans, rinsed and drained
- 2 cups low-sodium beef broth
- 8 ounces dry elbow macaroni, regular wheat pasta
- 8 ounces sharp cheddar cheese, freshly shredded (about 2 cups), divided
- 1/4 cup thinly sliced scallions, for serving
- Up to 1/2 cup water, only if needed to loosen the pasta
Freshly shredded cheddar melts more smoothly than many bagged cheeses. Keep the macaroni dry until the chili base has finished its long cook. The small amount of optional water helps if your cooker runs warm or your pasta absorbs more liquid.
Tools You Need
- 6-quart oval slow cooker
- Large skillet
- Wooden spoon or heatproof spatula
- Measuring cups and spoons
- Colander for rinsing beans
- Cheese grater
- Instant-read thermometer
How to Make Slow Cooker Cheddar Chili Mac
Brown the beef first, let the chili base cook, then finish with pasta and cheese.
Step 1: Brown the Beef and Soften the Vegetables
Place 1 pound 90% lean ground beef, 1 medium onion, finely diced (about 1 cup), and 1 medium red bell pepper, diced (about 1 cup) in a large skillet over medium-high heat.
Cook for 8–10 minutes, breaking the beef into small crumbles and stirring, until the vegetables soften and the beef reaches 160°F (71°C). Drain off any excess fat.
Stir in 3 minced garlic cloves, 1 tablespoon mild American chili powder, 2 teaspoons ground cumin, 1 teaspoon smoked paprika, 1 teaspoon dried oregano, 1/2 teaspoon fine salt, and 1/4 teaspoon ground pepper. Cook for 1 minute, stirring so the spices do not scorch.
Step 2: Build the Chili Base
Transfer the entire beef and vegetable mixture to a 6-quart oval slow cooker.
Add 1 can (28 ounces) crushed tomatoes with their liquid, 1 can (15 ounces) kidney beans, rinsed and drained, and 2 cups low-sodium beef broth. Stir well to combine.
Step 3: Slow Cook the Chili
Cover and cook on HIGH for 4 hours, until the onion and pepper are very soft and the chili is thoroughly heated. Keep the lid on during this stage.
If your schedule suits it better, cook the base on LOW for 6–7 hours, then switch to HIGH before the next step. This longer option adds 2–3 hours to the listed total time.
Step 4: Cook the Macaroni
Stir 8 ounces dry elbow macaroni into the chili, pressing it down so the sauce coats the pasta.
Cover and cook on HIGH for 30–45 minutes. Start checking at 20 minutes, then check about every 10 minutes. Stir at the first check to keep the edges from drying out.
Stop when the macaroni is tender with a slight bite and no hard center. Slow cookers vary, so use the texture rather than the clock alone.
If the pasta is still firm and the sauce looks dry, stir in 1/4 cup water. Add a second 1/4 cup water only if needed, using no more than 1/2 cup water total. Let it finish cooking before adding cheese.
Step 5: Melt in the Cheddar
Turn off the slow cooker.
Stir in 6 ounces freshly shredded sharp cheddar (about 1 1/2 cups) until melted. Reserve the remaining 2 ounces cheddar (about 1/2 cup) for serving.
Let the chili mac stand uncovered for 5 minutes. The sauce should cling to the pasta while staying loose enough to spoon into bowls. Avoid a long hold on the warm setting, which can soften the pasta too much.
Step 6: Finish and Serve
Divide the chili mac among 6 bowls.
Sprinkle the reserved 2 ounces shredded cheddar (about 1/2 cup) and 1/4 cup thinly sliced scallions evenly over the bowls. Serve promptly while the pasta has its best texture.
Offer crusty bread alongside, if you like. A simple green salad also makes a fresh side.
Why This Recipe Works (Quick Science)
Browning the beef builds savory flavor before the slow cooker takes over. The long cook softens the onion and pepper and lets the spices blend into the tomato base.
Adding the macaroni late gives it time to absorb flavor without sitting in liquid for hours. Its starch also helps the sauce cling. Stirring in freshly shredded cheddar after turning off the heat helps it melt into the sauce with less risk of becoming oily or grainy.
Common Mistakes to Avoid
- Adding pasta at the start: It will swell and lose its shape during the long cook.
- Using the wrong chili powder: Pure ground hot chile can make the dish much hotter than a mild American spice blend.
- Skipping the pasta checks: Different cookers and pasta brands need different times.
- Cooking cheese for hours: Stir it in at the end for a smoother finish.
- Holding the finished dish too long: The macaroni keeps soaking up sauce, even after cooking stops.
What to Serve With Slow Cooker Cheddar Chili Mac
Crusty bread is great for scooping up the last bit of sauce. A green salad with a simple vinaigrette adds a crisp, fresh side. The chili mac already contains beef, beans, and pasta, so keep extras small.
Substitutions and Variations
- Beans: Use drained canned pinto beans or black beans in place of kidney beans.
- Cheese: Try Monterey Jack for a milder finish, or replace part of the cheddar with pepper Jack for more heat.
- Beef: Ground turkey works too; cook it to 165°F (74°C) before transferring it to the slow cooker.
- Pasta: Small shells can work, but check early and expect the timing to change. Gluten-free pasta can soften faster and needs close watching.
Leftovers and Storage
Divide leftovers into shallow containers and refrigerate within 2 hours. Keep refrigerated for 3–4 days. The macaroni will absorb more sauce as it sits.
Reheat only the portion you need, adding a small splash of water to loosen it. Stir during reheating and heat the center to 165°F (74°C).
For the best freezer texture, freeze the chili base before adding macaroni or cheese, for up to 3 months. Thaw overnight in the refrigerator, bring the base to a simmer in a pot, then cook the macaroni in it and finish with cheese. Fully finished chili mac can be frozen, but the pasta will be softer after thawing.
Macros Information
Estimated per serving, based on 6 servings, including cheddar and scallions but excluding optional sides:
- Calories: 510 kcal
- Protein: 33 g
- Carbohydrates: 48 g
- Fat: 21 g
- Saturated Fat: 11 g
- Fiber: 7 g
- Sugar: 9 g
- Sodium: 790 mg
These are estimates. Brands, drained bean weight, and cheese measurements can change the numbers.
Frequently Asked Questions (FAQ)
Q: Do I cook the macaroni first?
A: No. Add it dry to the fully cooked chili base and let it cook on high near the end.
Q: Can I leave this cooking all day?
A: Use the low-setting option for the base, but wait to add the pasta and cheese until you are ready to finish dinner.
Q: Why is my macaroni still firm?
A: Your cooker may run cooler, or the pasta may need more time. Keep it covered on high between checks and use the measured optional water if the sauce has become dry.
Q: Why did the sauce get thick after serving?
A: Pasta keeps absorbing liquid. Serve promptly and loosen leftovers with a little water when reheating.
Q: Is this very spicy?
A: A mild American chili powder gives gentle warmth. Heat varies by brand, so check the blend before using it.
Q: Can I use freshly cooked beans?
A: Yes. Use about 1 1/2 cups fully cooked, drained beans. Never put raw or merely soaked dried kidney beans straight into a slow cooker.
Q: Should the cheese make a layer on top?
A: No. Most of the cheddar melts into the sauce. The reserved portion is a light finishing sprinkle on each bowl.
Q: Can I double the recipe?
A: Use two slow cookers rather than crowding this batch into one. The pasta needs enough room and liquid to cook evenly.
Q: Can I make the base the day before?
A: Yes. Cool it promptly in shallow containers and refrigerate. Reheat the base to 165°F (74°C) on the stove before transferring it to a preheated slow cooker to finish with pasta. Do not use the slow cooker to reheat a cold base.
Final Thoughts
Slow Cooker Cheddar Chili Mac is a cozy, filling dinner with simple ingredients and a cheesy finish. Add the macaroni late, keep an eye on its texture, and bring the bowls to the table soon after the cheddar melts. Leave a comment with your favorite bean or cheese swap. Happy cooking!