After chopping the vegetables and making the Country Beef Breakfast Sausage, evenly divide beef and vegetables into 8 food-safe zip top bags. Refrigerate for up to 4 days.
For each serving, coat a 6 to 12-ounce mug or ramekin with cooking spray. Add an egg and one tablespoon of water. Whisk briefly, then add a bag of the refrigerated mix and give it a quick stir.
Microwave, uncovered, on high for 30 seconds. Stir. Continue to microwave on high, 30-60 seconds longer, or until the egg is just set.
Stir again, then top with the cheese. Let stand for 30 seconds or until the cheese melts. Season with salt and pepper, add desired toppings and serve.