Pressure Cooker Mac and Cheese Recipe (Thick, Creamy & Ready Fast)

Pressure Cooker Mac and Cheese is an easy comfort food recipe made with tender pasta and a rich, creamy cheese sauce. Ready in minutes, it's the perfect side dish for weeknight dinners, holidays, and family meals.

Updated April 2026: I've refreshed this post with expanded tips, a full FAQ section, storage and reheating guidance, and serving ideas based on your questions and feedback. Originally posted on October 10, 2019.

Mac and cheese holds a very special place in my heart and, honestly, in my kitchen too. Growing up, it was the one dish that could make any hard day feel a little more manageable. Whether it was served alongside fried chicken on a Sunday or spooned up on a Tuesday night when nobody felt like cooking, macaroni and cheese was always the answer. So when I got my first pressure cooker and started experimenting, the very first recipe I knew I had to figure out was this one.

I have been making and testing macaroni and cheese recipes here on Simply LaKita for years. You may already know my Southern Mac and Cheese, that baked, classic version that comes out golden and bubbling and is pure comfort in a dish. But this pressure cooker mac and cheese is something different entirely. It is a true dump-and-go recipe that goes from pantry to table in under 15 minutes, with no boiling water, no draining pasta, and no separate pot for sauce. Every single time I make it, it comes out perfectly thick and creamy.

The secret to this recipe is the combination of evaporated milk and Parmesan cheese, two ingredients that most quick mac and cheese recipes skip. The evaporated milk creates a silkier, richer sauce than regular milk, and the Parmesan thickens everything up beautifully while adding a depth of flavor you just cannot get from cheddar alone. I tested this recipe more times than I can count before landing on this exact formula, and I am genuinely proud of how it turned out. Let's get started!

Why You'll Love This Pressure Cooker Mac and Cheese

• Ready in under 15 minutes - The pressure cooker does all the work, so you can have homemade mac and cheese on the table faster than a drive-through run.
• One pot, no draining - The pasta cooks directly in the chicken stock and absorbs all that flavor, then transforms into the cheese sauce in the same pot. Fewer dishes, more cheese.
• Three-cheese blend for maximum flavor - Sharp cheddar, mild cheddar, and Parmesan work together to create a sauce that is thick, rich, and layered, not flat or one-note.
• Completely customizable - Use shells or elbows, swap the cheese blend, add bacon or jalapeños. This recipe is a flexible base that you can make your own every single time.

Ingredients You'll Need

1. The pasta: I use either elbow macaroni or medium shells for this recipe. Both work beautifully. Shells hold more sauce in their curves, which gives you an extra cheesy bite. I have tested this with 16 ounces (one full box) and that is the sweet spot for the liquid ratio.
2. Chicken stock: This is the cooking liquid for the pasta, and it adds real flavor that plain water simply cannot. You can substitute chicken broth or water. If using water, bump the salt up to 1 teaspoon to compensate.
3. Butter: Adds richness to the sauce and helps keep things smooth. You can use salted or unsalted, both work fine.
4. Dry mustard powder and garlic powder: These two seasonings are what give this mac and cheese a grown-up, complex flavor. You do not taste them as individual ingredients, but you would notice if they were missing.
5. Evaporated milk: This is one of the keys to this recipe. Evaporated milk has had about 60% of its water removed, which means it is richer and thicker than regular milk and stays stable under heat without curdling. It is what gives this sauce its velvety consistency. You can substitute whole milk in a pinch, but the sauce will be slightly thinner.
6. Parmesan cheese: The grated Parmesan does double duty, it adds a nutty, savory depth of flavor and also acts as a thickener for the cheese sauce. Do not skip it or substitute it out. Pre-grated or freshly grated both work.
7. Sharp cheddar and mild cheddar: The combination of both gives you bold cheddar flavor balanced with a smoother melt. I recommend shredding your own cheese from a block rather than using pre-shredded. The anti-caking agents in bagged shredded cheese can make the sauce slightly grainy. That said, pre-shredded works in a pinch.

👉🏾 See the recipe card below for exact quantities and full instructions.

How to Make Pressure Cooker Mac and Cheese

Step 1: Load the Pressure Cooker

Add the pasta, chicken stock, butter, dry mustard powder, garlic powder, salt, and pepper directly to the pressure cooker or Instant Pot. Give everything a quick stir to distribute the seasonings. Lock the lid and make sure the pressure valve is set to Sealing not Venting. This is the step most beginners miss, so double-check before you walk away.

Step 2: Pressure Cook for 4 Minutes

Cook on Manual (or Pressure Cook) on High Pressure for 4 minutes. The pot will take about 8-10 minutes to come to pressure before the countdown begins, that is completely normal. When the 4-minute cook time is done, carefully use the quick release function to release the steam. Use an oven mitt and point the valve away from your face and cabinets, starchy pasta can cause the steam to sputter a little.

Step 3: Stir the Pasta

Once the steam has fully released and the lid is safe to open, remove it and stir the pasta and remaining liquid together. The pasta will look like it is sitting in a starchy, buttery broth, that is exactly what you want. That liquid becomes the base of your cheese sauce.

Step 4: Add the Evaporated Milk

Pour in the evaporated milk and stir to distribute it evenly through the pasta. You will see the sauce start to come together immediately. Give it about 30 seconds of stirring before moving to the cheese.

Step 5: Stir in the Cheese

Add all three cheeses. Parmesan first, then the cheddars, and stir continuously until everything has melted and the sauce is smooth and thick. This takes about 2 minutes of active stirring. The sauce will continue to thicken as it sits, so if it looks slightly thin right when you finish, give it 60 seconds and stir again.

LaKita's Expert Tips

• Do not skip the quick release. Natural pressure release adds additional cook time to the pasta and can result in mushy noodles. Always use quick release for pasta dishes in the pressure cooker.
• Shred your own cheese when you can. Pre-shredded cheese contains potato starch or cellulose to prevent clumping, which can make your sauce slightly grainy. A block of sharp cheddar shredded on a box grater makes a noticeably smoother sauce.
• Add the cheese off the heat. After you quick release and stir in the evaporated milk, the pot has cooled down enough that the residual heat melts the cheese perfectly without seizing or breaking. You do not need to turn the pot to Sauté mode.
• The "soupy" stage is normal. Right after you open the lid, the pasta will look like it is sitting in a lot of liquid. Do not panic, stir it, add the milk and cheese, and within 2 minutes it becomes thick and creamy.
• Do not fill the Instant Pot more than halfway for this recipe. Starchy foods create foam under pressure, and overfilling can push that foam into the pressure valve. Stick with one box (16 oz) of pasta.
• Taste before serving and adjust salt. The chicken stock adds saltiness, so taste the finished mac and cheese before adding any extra salt.
• Stir in a tablespoon of cream cheese at the end if you want an extra-silky, ultra-thick sauce, it melts right in and you will not taste it separately.

Variations & Substitutions

• Swap the pasta shape: Elbow macaroni and medium shells both work perfectly at the same cook time. Cavatappi and small penne may need an extra minute. Avoid large shapes that take longer to cook.
• Change up the cheese: The base recipe uses sharp cheddar, mild cheddar, and Parmesan. But you can swap in Gruyère, smoked Gouda, Monterey Jack, or mozzarella for different flavor profiles. Just make sure you keep the Parmesan for thickening.
• Make it spicy: Add a few dashes of hot sauce to the pot before pressure cooking, or stir in a can of diced green chiles with the evaporated milk for a Southwestern twist.
• Add protein: Stir in diced cooked bacon, leftover rotisserie chicken, or smoked sausage after the cheese is melted to turn this into a main dish.
• Make it vegetarian: Substitute vegetable broth for the chicken stock, the flavor holds up well.
• Velveeta version: Substitute 8 ounces of cubed Velveeta for the cheddar cheeses for an ultra-smooth, extra creamy sauce that kids absolutely love.

Make-Ahead & Storage

Make-Ahead

This mac and cheese is best made fresh, the sauce is at peak creaminess right out of the pot. However, you can prep your cheese by shredding it up to 2 days ahead and storing it in a zip-top bag in the refrigerator. All the dry ingredients (mustard powder, garlic powder, salt, and pepper) can be pre-measured and combined in a small bowl so the recipe is even faster to assemble on a busy weeknight.

Storage & Reheating

Storage: Let the mac and cheese cool completely before transferring to an airtight container. It will keep in the refrigerator for up to 4 days. I do not recommend freezing, the sauce tends to separate and become grainy once thawed.

Reheating: Add the leftover mac and cheese to a saucepan over low heat and splash in 2-3 tablespoons of milk. Stir gently and heat until warmed through, adding more milk as needed to loosen the sauce back to a creamy consistency. You can also reheat in the microwave. Transfer to a microwave-safe bowl, add a splash of milk, and heat in 45-second intervals, stirring between each, until hot.

What to Serve with Pressure Cooker Mac and Cheese

• As a classic Southern side dish - Pair it with Southern Fried Chicken or a slow-cooked pot roast for a full comfort food spread that your whole family will love.
• With garlic green beans - Try it alongside Garlic Green Beans for a simple, satisfying weeknight plate that comes together fast.
• Next to a great steak - Serve this as the side for a perfectly cooked Ribeye Steak for a steakhouse-quality dinner at home.
• With Southern cornbread - A slice of Honey Butter Cornbread alongside a big bowl of this mac and cheese is about as comforting as dinner gets.
• Topped with broccoli - Stir in a cup of steamed broccoli florets right before serving, or check out One Pot Broccoli Mac and Cheese for a built-in veggie version.

Frequently Asked Questions