Instant Pot Mac and Cheese only requires four ingredients: pasta, butter, evaporated milk, and Cheddar cheese–lots of it. In only minutes, you get a creamy, perfect mac and cheese.
Who needs another recipe for mac and cheese? Me, that’s who. My first attempt at Instant Pot Mac and Cheese is delicious. It’s also a little…putzy. The recipe uses an egg, mustard, and hot sauce along with a good addition of cheese. It makes a delicious, and decidedly grown-up, mac and cheese.
For this version, I wanted something simple. The type of mac and cheese that defines classic American comfort food—a creamy pasta with no sharp edges from mustard or pepper. Basically, I craved a homemade version of Stouffer’s mac and cheese.
After working on it for a bit and eating too much mac and cheese. (Read: I wore stretchy pants a lot.), I came up with a recipe that uses only four ingredients. (I’m not counting water or salt.) That’s right, you don’t need a ton of ingredients to make a creamy, dreamy mac and cheese in your instant pot. So get your stretchy pants ready, this recipe is a comfort food miracle.
How to Make Creamy Instant Pot Mac and Cheese
- Use Elbow Macaroni. It cooks in only four minutes and doesn’t get mushy. To prevent starch from shooting out of the valve when releasing pressure, add butter during cooking. The fat helps keeps the foam down.
- Stir in Evaporated Milk After Cooking. Some recipes have you cook the pasta in milk. During testing, I found that the milk often scorched on the bottom of the pot. Cooking the pasta in water and then stirring in evaporated milk gives the best results. And why evaporated milk? Good question. The higher protein and fat content of evaporated milk lends a silky texture to the mac and cheese. For this recipe, skip low or no fat evaporated milk.
- Grate Your Own Cheese. Pre-grated cheese contains a starch to keep it from clumping. This starch causes a mac and cheese that’s a little dry and grainy. Skip it.
- Stir. Stir. STIR! Don’t add all the cheese at once. If you do, the temperature of the pasta can fall quickly and you’ll get clumpy mac and cheese. Instead, add the shredded cheese one handful at a time. Stir after each addition until the cheese is almost fully melted. Once that happens, add another handful. Repeat until all the cheese is added.
- Remove from the Heat. Sometimes it’s easy to forget that there’s a cooking plate under the insert of the pressure cooker. Like a traditional electric burner, this plate stays hot for a little while after cooking. That heat can cause the mac and cheese to overcook and get grainy. To prevent overcooking, remove the instant pot insert after you’ve added all the cheese.
That’s really all there is to it. If you’ve ever tried to make a mac and cheese by just dumping milk and cheese together with pasta, you know that you usually get a gloppy mess. Traditional mac and cheese usually starts with a roux–a combination of cooked flour and butter. Recipes that don’t use a roux tend to use cornstarch. You don’t need either with this recipe thanks in part to two things: the starch in the pasta cooking water and the evaporated milk.
Since the pasta cooks in a relatively small amount of water, there’s concentrated starch in the water remaining after the pasta cooks. This is key. Don’t drain that water. The starch it contains is what makes such a creamy mac and cheese.
The other key? Evaporated milk. While you might be tempted to swap the evaporated milk for whole milk, don’t do it. Evaporated milk contains 60% less water than regular milk. This reduction of water means that one cup of evaporated milk contains more protein than one cup of traditional milk. The milk protein makes it possible to make a mac and cheese without starting with a roux.
In only a few minutes, with just a few ingredients, you can make a mac and cheese that’s perfect as a main course or side dish. My advice: get out the stretchy pants and make this recipe.
Easy 4 Ingredient Instant Pot Mac and Cheese
4 Ingredient Instant Pot Mac and Cheese contains elbow macaroni, butter, evaporated milk, and Cheddar cheese. It makes a creamy mac and cheese that everyone will love.
- 1 pound elbow macaroni
- 4 1/2 cups water
- 1 teaspoon salt
- 2 tablespoons butter
- 1 (12 ounce) can evaporated milk
- 12 ounces grated Cheddar cheese (see note)
- freshly ground pepper, optional
Combine macaroni, water, and salt in the pot of a pressure cooker. Stir. Add butter. Lock lid into place. Set pressure cooking time for 4 minutes on HIGH pressure.
Once cooking time completes, allow pressure cooker to cool for one minute. Carefully vent valve to release pressure. Remove lid away from your face to prevent burns.
Stir the macaroni to break up any clumps. If any water remains, drain the pasta.
Stir in evaporated milk. Allow the pasta to cool for one minute. Turn on the saute setting to low. Add the cheese in large handfuls. Stir after each addition. After the last addition of cheese, stir until creamy. Turn off the pressure cooker and remove the pot. (This prevents the cheese sauce from overcooking and getting grainy.)
Taste. Adjust salt and add freshly ground pepper to taste.
Instant Pot Mac and Cheese: Selecting the Cheese
You really want to grate your own cheese for this recipe. Pre-grated cheese is coated in a starch that can make this recipe dry, clumpy, and a little grainy. Sharp Cheddar is the best; extra-sharp, which I love, tends to be a little too dry for this recipe.