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mealinspired » Recipes » Main Dishes

Chili Mac With Leftover Chili

Published: Jan 2, 2025 · Modified: Sep 26, 2025 by Ali Mairet · This post may contain affiliate links · Leave a Comment

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Are you getting tired of leftover chili? Elevate it into a completely new meal with this easy, cheesy, one-pot chili mac with leftover chili recipe.

Chili mac with leftover chili in a black bowl with a spoon next to a napkin.

If you're staring at that container of chili in your fridge and just can't face another bowl of the same thing, this cheesy, creamy one-pot wonder is about to become your new favorite leftover makeover.

I made this recipe during the day and ate one small bowl just like the picture above. We returned home for dinner to find the pot empty. My son ate the entire pot of chili mac. He grinned and admitted eating it stating, "It was really good."

Maybe you made a big batch of chili for game day, or perhaps you intentionally cooked a large batch of chili to freeze for later. Whatever the reason, this 30-minute chili mac is the answer to your leftover dilemma. It takes that hearty chili you already have and turns it into a comforting pasta dish that your whole family will love.

If you are looking for a recipe that makes extra chili, try this Best Thick Homemade Chili With Saltines Recipe. This bubbling pot of cheesy, Chili Mac just might become more popular than your original chili.

Check out these other game day main dish recipes so that you can watch the game, too! Popular dishes are crispy pork tacos, some taco casserole with homemade salsa, or a steakhouse baked potato bar with a variety of toppings.

Jump to:
  • Why You'll Love This Recipe
  • Ingredients
  • Loving White American Cheese
  • Substitutions & Variations
  • Why Do We Save Pasta Water?
  • How To Make Chili Mac With Leftover Chili
  • Storage Instructions
  • Frequently Asked Questions
  • What To Serve With This Recipe
  • 📖 Recipe
  • 💬 Comments

Why You'll Love This Recipe

  • It's a completely new meal.
  • One-pot means minimal cleanup.
  • This recipe is potluck and weeknight-friendly!
  • It's so easy and ready in under 30 minutes!

Ingredients

Here are the ingredients needed to make Chili Mac With Leftover Chili.

The ingredients needed to make leftover chili mac and cheese.
  • Leftover Chili: This is a critical ingredient to make the best chili mac. Make sure it's thick and not too soupy. Beans are optional. The spices had the time they needed to penetrate and season the meat giving you the best results when you mix it with the mac and cheese.
  • Dried Pasta: Any medium-sized variety of dried pasta will work. The shape in the photo above is cavatappi. Other options are: elbow, penne, bow ties, fusilli, rotini, shells, orecchiette, etc.
  • White American Cheese: Rather than Velveeta, look for the white American cheese sold in the grocery store deli where they slice the cheese and meats for sandwiches.
  • Colby Jack Shredded Cheese: This is a semi-soft marble cheese. The blend is Colby and Monterey Jack cheese which is creamy and melts nicely.
  • Salted Butter: I prefer using salted butter when making mac and cheese.
  • Milk: This is to help loosen the cheese while it melts creating a cream base. You can use either skim, 1%, 2%, or whole-fat milk. If you only have half and half that works, too.
  • Cilantro: This is a leafy, green herb that will produce coriander seeds when it bolts to seed. It's very common in southwest food including chili and sold by the bunch in the produce section next to parsley.
  • Fresh Ground Black Pepper: Grinding your peppercorns the day of cooking is best.
  • Diamond Crystal Kosher Salt: I prefer the brand Diamond Crystal because its shape is lighter and flakey, and it dissolves faster, which helps prevent over-seasoning. If using Morton kosher or table salt, reduce the salt measurements by half.

See the recipe card below for ingredient measurements.

Loving White American Cheese

There is either a love or hate relationship with foodies and American cheese. Food people think it’s not real cheese, or it tastes like plastic. Some of it does taste pretty blah. You certainly would not put it on a charcuterie board.

The real value is in how it melts. There is a time and place for it. I happen to enjoy White American Cheese from the deli section of the store- on a cheeseburger, grilled cheese, or macaroni and cheese.

If you do not like American cheese, simply substitute your favorite melting cheese.

Substitutions & Variations

  • White American Cheese- You can replace this cheese with shredded Cheddar, Fontina, or Colby-Jack.
  • Chopped Cilantro - You can substitute chopped Italian Parsley, or omit fresh herbs entirely.

Why Do We Save Pasta Water?

If you haven't done so yet, get into the habit of saving some of your pasta water before draining it every time you boil pasta. You may or may not need it, but this warm, seasoned, starchy water can be a valuable tool to achieve the sauce you desire.

Here's why:

  • It helps bind and emulsify sauces. When you add a splash of pasta water to your sauce, the dissolved starches act as a natural thickener and emulsifier.
  • It adjusts sauce consistency - if your pasta dish is too thick or dry, adding pasta water helps thin it while maintaining a luxurious texture
  • It helps create the perfect al dente finish - when cooking pasta, you often transfer it slightly undercooked to your sauce and finish cooking it there, using the reserved pasta water to achieve the ideal coating and texture.
  • Remember, you want to enhance the sauce and not create a soup! It's best to add pasta water gradually, one tablespoon at a time, until you reach your desired consistency.

How To Make Chili Mac With Leftover Chili

A pot of boiling water with dried pasta, salt, and American cheese next to it.

Step 1: Bring a pot with 1 gallon of water to a boil. Salt the water with 2-3 tablespoons of kosher salt so that it tastes like the ocean.

Reheat the leftover chili.

A pyrex filled with pasta water held over the pot of cooking pasta before draining it.

Step 2: Add the dried pasta to the pot of boiling water and stir. Set the timer to 1 minute less than the macaroni cooking directions state. Around 6-7 minutes.

Once the pasta is cooked to al dente texture, use a Pyrex measuring cup to capture ½-1 cup of pasta water.

Drained, cooked, cavatappi shaped pasta in a strainer being poured back to the pot.

Step 3: Drain the pasta and return the noodles to the pot off of heat.

A pot of cooked macaroni pasta with American Cheese slices and butter on top while milk is ready to pour into the pot.

Step 4: Add the butter, American cheese slices, salt, and milk. Stir to combine.

Macaroni and cheese before the leftover chili is added to it.

Step 5: If the macaroni and cheese appears dry or the noodles are not saucy, add the pasta water 1 tablespoon at a time to the mixture to loosen the sauce to your liking. I added 2 tablespoons above.

Warm, leftover chili in a clear bowl poured over the pot of macaroni and cheese.

Step 6: Add the warm chili to the macaroni and cheese pasta.

A pot of chili mac with the leftover chili mixed into the cheesy pasta.

Step 7: Stir to combine.

Chili mac with leftover chili with unmelted shredded colby jack cheese sprinkled on top.

Step 8: Sprinkle the shredded colby jack cheese on top. Cover the pot for 2-3 minutes to melt the cheese. Sprinkle the chopped cilantro on top and serve warm.

Melted shredded cheese over the chili mac in a pot.

Storage Instructions

Leftover chili mac is best served immediately.

This dish stays good for 3-4 days when stored in an airtight container in the refrigerator. Warm it up in the microwave.

Frequently Asked Questions

Can I make this recipe spicier?

Absolutely! Add cayenne pepper, hot sauce, or diced jalapeños to taste. You can also top it with red pepper flakes.

What if I added too much pasta water?

It happens! Often, the simplest solution is to keep cooking the chili mac over medium heat, stirring frequently. The pasta will continue to absorb the liquid.

Can I make this ahead of time?

For best results, make it just before serving. If needed, you can prepare it up to 2 hours ahead and keep it warm in the oven covered with foil on the lowest setting.

Did you try any of these tips? Leave a comment below to let us know how it turned out! Thanks for visiting!

A pot of chili mac and cheese with melted cheese chopped cilantro on top.

What To Serve With This Recipe

  • Partially eaten thick homemade chili in a bowl with cilantro, onions, cheese, and sour cream.
    The Best Thick Homemade Chili Recipe With Saltines
  • A fork holding a few quick pickled red onions above a mason jar.
    Quick Pickled Red Onions (No Cook)
  • Red restaurant style salsa made from canned tomatoes in a black bowl next to tortilla chips.
    Salsa Recipe With Canned Tomatoes
  • Leftover Thanksgiving stuffing waffles recipe with turkey, gravy, and green beans.
    Stuffing Waffles Recipe (Thanksgiving Leftovers)

📖 Recipe

A pot of chili mac and cheese with melted cheese chopped cilantro on top.

Chili Mac With Leftover Chili

Ali Mairet
This easy, cheesy, creamy one-pot chili mac recipe with leftover chili is about to become your new favorite leftover makeover.
No ratings yet
Print Recipe Pin Recipe
Prep Time 5 minutes mins
Cook Time 8 minutes mins
Water temp to boiling 15 minutes mins
Total Time 28 minutes mins
Course Main Course
Cuisine American
Servings 6
Calories 472 kcal

Ingredients
 

  • 8 ounces dried macaroni (any 1 inch sized pasta will work)
  • 4 ounces white American cheese slices
  • 2 tablespoons salted butter
  • 2 tablespoons milk (skim, 1%, 2%, or whole)
  • ½ teaspoon Diamond Crystal kosher salt (for seasoning, plus 2-3 Tablespoons for the pasta water)
  • 28 ounces leftover chili (28-32 ounces works)
  • 4 ounces shredded Colby Jack cheese (1 cup)
  • 1 tablespoon cilantro, chopped

Instructions
 

  • Bring a heavy bottom pot with 1 gallon of water to a boil. Salt the water with about 2-3 tablespoons of kosher salt.
  • While waiting for the water to boil, reheat the chili until it is hot.
  • Add the dried pasta to the pot of boiling water and stir. Set the timer to 1 minute less than the macaroni cooking directions state. Around 6-7 minutes.
  • Before draining the pasta, use a Pyrex measuring cup to capture ½-1 cup of pasta water in case you need it to thin out the macaroni.
  • Drain the pasta and return the noodles to the pot off of heat. Add the butter, American cheese slices, salt, and milk. Stir to combine. If the macaroni and cheese appears dry or not saucy, add the pasta water 1 tablespoon at a time to the mixture to loosen the sauce to your liking.
  • Taste a noodle to check for seasoning and add kosher salt if desired.
  • Add the warm chili to the pasta and stir to combine.
  • Sprinkle the shredded Colby Jack cheese on top. Cover the pot for about 3 minutes to melt the cheese. Sprinkle the chopped cilantro on top and serve warm.

Nutrition

Calories: 472kcalCarbohydrates: 45gProtein: 21gFat: 24gSaturated Fat: 13gPolyunsaturated Fat: 1gMonounsaturated Fat: 7gTrans Fat: 0.4gCholesterol: 71mgSodium: 1358mgPotassium: 616mgFiber: 7gSugar: 3gVitamin A: 943IUVitamin C: 2mgCalcium: 409mgIron: 5mg

The provided nutritional information is an estimate per serving. Accuracy is not guaranteed.

Tried this recipe?Let us know how it was!

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Ali Mairet from mealinspired.

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