Instant Pot Vegan Cheese Sauce with Potatoes and Carrots

The best Instant Pot Vegan Cheese Sauce made with vegetables — silky, creamy, and deeply savory. This versatile sauce works beautifully as a mac and cheese base, a dip for nachos or veggies, a topping for baked potatoes, or a sauce for rice and tacos. It can be made gluten-free and nut-free with simple swaps and also has a stovetop option if you don’t have a pressure cooker.

This recipe relies on cooked vegetables (potatoes, carrots, cauliflower or zucchini) plus cashews for creaminess, then boosts savory, cheesy notes with nutritional yeast and miso paste. Stone-ground mustard, garlic, onion powder and a touch of pickle juice or vinegar round out the flavor. The Instant Pot keeps the method quick and mostly hands-off: pressure cook, blend until smooth, and finish on the stove if needed to thicken.

Instant Pot Vegan Cheese Sauce — Key Benefits

This sauce is: dairy-free, easy to adjust for nut-free or gluten-free diets, quick to prepare in an electric pressure cooker, and adaptable for many uses (mac and cheese, nachos, baked potato topping, veggie sauce, pizza drizzle, and more). Nutritional yeast provides classic cheesy flavor without dairy, while miso adds savory umami that makes the sauce taste rich and satisfying.

Ingredients

• 1/2 cup raw cashews (or see nut-free note)
• 1.5 cups peeled, cubed Yukon Gold potatoes
• 1/4 cup peeled, chopped carrots
• 1/3 cup chopped cauliflower florets (or peeled chopped zucchini)
• 3/4 tsp salt (adjust to taste)
• 1.5 tsp lemon juice
• 3 cloves garlic
• 1 tsp stone-ground mustard
• 1–2 tsp yellow or white miso (use chickpea miso if soy-free)
• 1/4 tsp black pepper
• 2 tsp pickle juice or 1/2 tsp vinegar
• 1/4 cup nutritional yeast
• 1.5 cups water (for Instant Pot)
• To add after blending: 1 tbsp oil, 1/4 tsp onion powder, 2 tsp all-purpose flour (or tapioca starch for gluten-free)

How to make Vegan Cheese Sauce in the Instant Pot

1. Add all ingredients except the oil, onion powder and flour/starch into the Instant Pot with 1.5 cups of water. To avoid miso clumps, dissolve the miso in the water first, then add the remaining ingredients. Stir well.
2. Close the lid and pressure cook on high for 11 minutes. Allow the pressure to release naturally.
3. Open the lid and let the cooked mixture cool a few minutes. Transfer to a high-speed blender. Add the oil, onion powder and flour or starch, and blend until completely smooth and creamy.
4. If you prefer a thicker sauce for serving immediately, return the blended sauce to the Instant Pot on Sauté or to a saucepan and simmer a few minutes until it thickens. Taste and adjust salt, acidity, and seasonings.

Stovetop option: Combine all ingredients in a pot with 2.5 cups water (instead of 1.5 cups). Partially cover and simmer over medium heat until the potatoes are tender. Let cool slightly, then blend with the oil, onion powder and flour/starch until smooth.

Notes & Variations

• Nutfree: Replace cashews with 1/3 cup pumpkin seeds or a mix of pumpkin and hemp seeds, and add an extra teaspoon of starch to help thicken.
• For a brighter orange color, add a pinch of turmeric.
• For smoky flavor, add 1 tsp smoked paprika or a small splash of liquid smoke.
• Nutritional yeast substitute: if you need an alternative, a bit more miso (about 1 tsp) can increase savory depth, though the flavor profile will differ.

Ways to Use Vegan Cheese Sauce

Serve over cooked or grilled vegetables, pour over pasta or rice, use as a creamy dip for chips and vegetable sticks, top baked potatoes or steamed broccoli, spoon over tacos, or use as a base for dairy-free cheese-style fillings in pizzas and savory pastries. This sauce is especially lovely as the foundation for a vegan mac and cheese — see the quick mac method below.

Quick Instant Pot Mac & Cheese

To cook pasta and finish as a one-pot dish: oil the pot lightly, add 8 ounces elbow pasta, 2 1/4 cups water, 1/4 tsp salt and 1/8 tsp garlic powder. Pressure cook for 4 minutes (or half the package time plus one minute), then quick release carefully in short bursts. Stir in the cheese sauce and use the Sauté function until thickened and creamy.

Storage

Refrigerate the sauce in an airtight container for up to 4 days. Freeze for up to one month; expect minor separation after freezing — reheat and whisk or blend briefly to restore a smooth texture. Reheat gently and bring to a simmer to thicken as needed.

Nutrition (per serving — approximate)

Calories: 139 kcal; Carbohydrates: 15 g; Protein: 4 g; Fat: 7 g; Saturated Fat: 1 g; Sodium: 346 mg; Potassium: 376 mg; Fiber: 2 g; Sugar: 2 g; Vitamin A: 908 IU; Vitamin C: 13 mg; Calcium: 18 mg; Iron: 1 mg. Nutrition information is an approximation.

Tips

• Zucchini can replace cauliflower for a lighter, milder sauce.
• Sweet potatoes will yield a more orange, queso-like color and a sweeter flavor.
• Adjust salt and acidity at the end — a touch more pickle juice or vinegar can brighten the flavor dramatically.
• Chill the sauce briefly after blending; flavors often meld and improve after a short rest.