Brown sausage - drain on a paper towel.
Cook hash browns in the same pan. (I use a non-stick electric frying pan) While the hash browns are cooking - in a large mixing bowl, whisk eggs, milk, salt and pepper.
Add browned sausage back to the pan with the cooked hash browns.
Add the eggs to the sausage mixture and cook until the eggs are done, stirring gently. After eggs are done - lay a tortilla on counter. Place egg mixture on tortilla. Top with cheese. Roll into a burrito.
Wrap the burritos in plastic wrap. Then place the wrapped burritos in freezer zip-lock bags.