Easy Mac and Cheese Soup Recipe (Leftover Ham)

A 30-minute easy mac and cheese soup recipe that uses real food ingredients. Use leftover ham or your favorite meat to add protein. Best part? No canned cheese soup here!

Our family are ham fans, we usually make it at Christmas and Easter, and then we usually have a lot of leftover ham.

Love soup recipes? So do we, and there are oodles in the Soup archives, but a few of our favorites are Poblano Chicken Soup, Beer Cheese Soup and the ever so popular Panera Copycat Broccoli Cheese Soup.

I enjoy giving precise details in my recipe posts to lead my readers through any questions. If you’re just here for the printable recipe, use the Jump to Recipe to head straight there!

Simple Ingredients

• Onion | Diced or grated gives fantastic flavor to the base of the soup.
• Small Macaroni Shells | I used elbow, but any smaller pasta shell should work just fine, like these Conchiglie. Whole wheat or regular is fine, I have used both.
• Flour | Omit or swap for Gluten Free all-purpose flour if desired, I used unbleached AP flour.
• Dijon Mustard | Use yellow mustard in a pinch, Dijon adds such a great flavor and depth.
• Chicken Stock or Broth | Using a bit more broth than most recipes, it thins the soup out and makes it lighter. Taste test before adding salt to your recipe.
• Half and Half | Adds that beautiful creaminess. I used organic half & half, you could also use whole milk, I haven’t tried plant-based. If you try it let me know how it turns out.
• White American Cheese | I used whole milk American cheese; you can usually get this from the deli section, there are no fake ingredients in this cheese, and it melts so beautifully into the soup. But feel free to use shredded (off the block) cheddar, Gruyere, Mozzarella.
• Leftover Ham | you can certainly omit the ham for a delicious Mac n Cheese soup, but if you have it, it adds protein, flavor, and heft to the soup. 
• Peas | Add fresh or frozen peas at the very end if you’d like; they add a pretty pop of color and a little bit of nutrition.

How to Make Mac n Cheese Soup with Leftover Ham

Step 1 | Cook Pasta, Saute Onions, Make a Roux

First, get the pasta cooking; according to package directions, al dente. Drain and set aside.

Meanwhile, melt butter in a large soup pot, and sauté onions (and carrots if you’d like) until soft and caramelized, about 5-7 minutes.

If needed, add another tablespoon of butter, melt in pot; stir in flour and mustard, stirring for 1 minute to get rid of the flour taste.

Step 2 | Make Base of Soup

Add broth and half and half, and cook over medium heat, stirring constantly until steaming, about 4-5 minutes. If no “chunks” are desired, use an immersion blender or place in a blender and process in small batches.

Reduce heat to low, stirring in cheese until melted, but do not boil.

Step 3 | Finish soup

Stir in cooked macaroni and ham, stirring occasionally for 4-5 minutes or until heated. Add salt and pepper to taste, I used about 1 teaspoon kosher salt.

If desired, add fresh or frozen peas just before serving for the freshest, brightest tasting peas.

Variations & Substitutions

• Fresh Ham or Deli Ham in place of Leftover Ham | Use whatever ham you have on hand, heck leave them ham out and use chunks of chicken or turkey or whatever you want!
• Three-Cheese Delight | Experiment with cheeses like smoked Gouda, Gruyere, fontina, or even blue cheese for a unique twist on your cheesy masterpiece.
• Bacon Bliss | If you’re out of ham, sizzle up some crispy bacon as a savory alternative. The smoky, salty goodness will elevate your soup to new heights.
• Smoked Turkey | Swap out the ham for smoked turkey to create a lighter yet satisfying version of this soup. Also try hot dogs, brats, kielbasa or your favorite meat.

• Spice it Up | Add a pinch of cayenne pepper or a dash of hot sauce for a subtle kick. Or try adding your favorite herbs, such as thyme, rosemary or even chopped parsely.
• Crunchy Crumbs | Toasted breadcrumbs or crushed crackers in a little melted butter make for a delightful, crispy topping.
• Veggie-Packed Version | Boost the nutrition by tossing in some sautéed spinach, mushrooms, or roasted red peppers for added color, flavor, and texture.
• Replace the half & half | Use whole milk or even heavy cream for a luscious soup!

Gluten-Free Mac and Cheese Soup

Eaisly make this soup gluten-free, but using a gluten-free all purpose flour, or omitting the flour all together. Purchase your favorite gluten-free macaroni shells (shorter is better), cook according to package directions, slightly under as they will cook again in the soup. That’s it!

Frequently Asked Questions

Storage Tips

After cooling the mac n cheese soup completely, place into an airtight container and refrigerate for up to 5 days.

Can I freeze Macaroni and Cheese Soup?

While it’s possible to freeze this soup, I recommend enjoying it fresh whenever possible. Freezing can change the texture of dairy-based soups, but if you do decide to freeze it, make sure to reheat it slowly and whisk in a little extra milk or cream to restore its creaminess.

How to reheat Mac and Cheese Soup

1. Stovetop Method: For the best results, reheat your mac and cheese soup on the stovetop. Place it in a saucepan over low to medium heat. Stir occasionally to ensure even heating. You may need to add a splash of milk or broth to restore the creaminess as it reheats. This method will maintain the soup’s texture and flavor.
2. Microwave Method: If you’re short on time, you can reheat small portions in the microwave. Use a microwave-safe bowl, cover it with a microwave-safe plate or microwave-safe plastic wrap to prevent splatters, and heat in 30-second intervals, stirring in between. Be cautious not to overheat, as it can cause the cheese to separate.
3. Slow and Steady Wins: Patience is key when reheating. Avoid high heat settings, as they can cause the cheese to scorch or the soup to bubble over.
4. Freshen Up: If your soup looks a bit thick after reheating, you can always add a touch of milk or broth and stir until you achieve your desired consistency.

More of our favorite soup recipes

We love soup season in our house and using up leftovers is even better! Try our favorite soups, like this German Goulash Soup or this Autumn Squash Soup and of course our popular Creamy Chicken Poblano Soup.

Our Favorite Leftover Ham Recipes

If you are making this using leftover ham, there is a good chance you have more to use! Try these favorite recipes.

More of our favorite comfort foods

I hope you loved this Macaroni and cheese soup — if you did, would you share your creation on Instagram, Facebook and Pinterest? And be sure to comment below!