Cook the sausage in a skillet over medium heat. Crumble it as it cooks, then drain the grease.

Whisk the eggs, milk, salt, and pepper in a bowl. Scramble them in the skillet until just set.

Place the muffin halves on a baking sheet. Add sausage, eggs, and cheese to each one.

Bake at 350°F for 8 minutes, until the cheese melts.

Cool completely. Wrap each muffin in foil, place them in a freezer bag, and freeze.

Reheat one wrapped in a paper towel for 1 to 2 minutes, checking before serving.