Step 1

Preheat oven to 400 degrees F (200 degrees C). Spray 12 muffin cups with cooking spray or grease with butter.

Step 2

Heat butter in a saucepan over medium heat. Cook and stir garlic in the melted butter until fragrant, about 1 minute. Add flour to garlic mixture; cook and stir until mixture is smooth and thickened, about 2 minutes.

Step 3

Slowly pour milk into flour-butter mixture while continuously stirring with a whisk until sauce is smooth and thickened, about 5 minutes. Remove saucepan from heat and stir Parmesan cheese into sauce until cheese melts from the heat of the sauce; season with salt and pepper.

Step 4

Divide the potatoes among the 12 prepared muffin cups and spoon cheese sauce over potatoes.

Step 5

Bake in the preheated oven until potatoes are tender, about 25 minutes.