Cheese Sauce Adventures in Microwave Cook

A proper roux-based cheese sauce in the microwave in under five minutes, with no double boiler, no constant whisking over a hot stove, and no lumps. Butter melts in a glass pitcher, flour gets stirred into a paste, milk goes in gradually, and short bursts on high with vigorous stirring between them build a smooth, thick white sauce that’s ready for the cheese.

The glass measuring pitcher is the right vessel for this. It gives you room to whisk without splashing, the handle stays cool, and you can see the sauce thickening through the walls. A bowl works but makes stirring harder and pouring messier.

Stirring at the two-minute mark, then every thirty seconds after that is the rhythm that prevents lumps. The microwave heats unevenly, so some spots thicken faster than others. Frequent stirring redistributes the heat and keeps the texture smooth throughout.

Sharp cheddar and dry mustard go in after the sauce has already thickened. Adding cheese to a thin sauce means it can break and go grainy. A thick base absorbs the melted cheese evenly and the mustard adds a barely perceptible tang that sharpens the cheddar flavor without tasting mustardy.

One final minute on high after the cheese goes in melts it completely and brings everything together.

Kitchen Tips

• Shred the cheese yourself from a block. Pre-shredded cheese has anti-caking agents that can make the sauce grainy
• Add the milk gradually to the butter-flour paste, stirring after each addition. Dumping it all in at once creates lumps
• Microwave power varies. If your sauce isn’t thick at four minutes, continue in 30-second bursts
• Pour this over steamed broccoli, baked potatoes, pasta, or nachos

Variations

• Use Gruyere or fontina instead of cheddar for a more mellow, nuttier sauce
• Add a pinch of cayenne or a dash of hot sauce for a spicy cheese sauce
• Stir in a tablespoon of cream cheese at the end for an extra-silky texture