Extra Creamy Instant Pot Mac and Cheese with Gruyère
This instant pot mac and cheese is made in one pot with no draining. A creamy pressure cooker mac with sharp cheddar, nutty gruyère, and a hint of mustard.
Most people think stovetop is the gold standard for pasta, but this instant pot mac and cheese will change your mind. By pressure-cooking the noodles directly in broth rather than water, every piece of pasta is infused with flavor from the inside out. Since there is no draining involved, the natural starches stay in the pot, creating a built-in thickener for the most luxurious sauce you've ever made in under 15 minutes.
Making an easy instant pot mac and cheese is all about the chemistry of the dairy. We use evaporated milk to ensure the sauce remains silky and emulsified, preventing that grainy texture that often plagues high-heat cheese sauces. This creamy pressure cooker mac balances the sharp bite of aged cheddar with the sophisticated melt of alpine gruyère.
Don't skip the dry mustard powder; it doesn't make the dish taste like mustard, but it acts as a flavor bridge that makes the cheese taste 'cheesier.' Whether it's a hectic Tuesday or a holiday side dish, this method is officially the most efficient way to achieve professional-level comfort food.
Ingredients
The Base
- 1 lb (454g) elbow macaroni
- 4 cups (960ml) chicken broth or vegetable broth
- 2 tbsp unsalted butter
- 1 tsp kosher salt
- 1/2 tsp garlic powder
- 1/2 tsp dry mustard powder
- 1/4 tsp cayenne pepper (optional)
The Sauce
- 12 oz (355ml) evaporated milk
- 8 oz (225g) sharp cheddar cheese, freshly shredded
- 4 oz (115g) Gruyère cheese, freshly shredded
- 1/4 cup (25g) freshly grated Parmesan cheese
Instructions
- 1
Combine the elbow macaroni, broth, butter, salt, garlic powder, mustard powder, and cayenne in the Instant Pot liner.
- 2
Secure the lid and set the pressure valve to the 'Sealing' position.
- 3
Select Manual/Pressure Cook on High for 4 minutes.
- 4
Perform a quick pressure release as soon as the timer beeps to prevent the pasta from overcooking; watch out for any starchy steam spray.
- 5
Open the lid and select the Sauté function on the lowest setting.
- 6
Pour in the evaporated milk and stir vigorously to break up any clumps of pasta.
- 7
Add the shredded cheeses one handful at a time, stirring constantly until each batch is fully melted before adding the next.
- 8
Turn off the heat once the sauce is smooth and glossy (it will look slightly thin, but will thicken significantly as it rests).
- 9
Taste and adjust salt or black pepper if necessary before serving immediately.
Nutrition (per serving)
Estimates only — not medical or dietary advice.
- Calories
- 685 kcal
- Protein
- 32 g
- Carbs
- 62 g
- Fat
- 34 g
- Fiber
- 2.5 g
- Sugar
- 9 g
- Sodium
- 1280 mg
Tips
- → Always grate your own cheese from a block. Pre-shredded bagged cheese is coated in potato starch or cellulose, which will make your sauce chalky and prevent a smooth melt.
- → If the pasta looks like it has a little excess liquid when you first open the lid, do not drain it. That starchy liquid is essential for emulsifying the cheese sauce.
- → For the best texture, use a 'Quick Release' for the steam. Letting it sit on 'Natural Release' will result in mushy, overcooked noodles.
FAQ
Why is my instant pot mac and cheese grainy?
Graininess usually happens if the heat is too high when adding the cheese, or if you used pre-shredded bagged cheese. The anti-clumping agents in bagged cheese don't melt smoothly. Turn the pot to 'Keep Warm' or off before folding in your hand-grated cheese.
Can I use regular milk instead of evaporated milk?
You can, but evaporated milk is highly recommended because it has a lower water content and contains stabilizers that prevent the sauce from breaking or curdling under heat.
How do I prevent the 'Burn' notice?
Ensure the pasta is fully submerged in the broth and that there are no stray noodles stuck to the bottom of the liner before you start the pressure cycle.
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