Whisk the eggs in a large bowl. Heat oil in a large skillet over medium-high heat. Pour in the egg mixture; cook and stir until eggs are completely set, about 5 minutes. Chop the cooked eggs and place in a large bowl. Set aside.

Heat a large skillet over medium heat and stir in the sausage and garlic. If you have actual sausage links instead of bulk sausage, mash them up as you cook. Cook and stir/mash for 5 minutes, then add the onion. Continue cooking and stirring until the sausage is crumbly, evenly browned, and no longer pink. Drain and discard any excess grease. Combine the sausage with the eggs, tomato, and taco seasoning. Allow mixture to cool to room temperature, then stir in the cheese.

Place a tortilla onto your work surface, then spoon some of the filling into the tortilla. Fold the bottom of the tortilla snugly over the filling, then fold in the left and right edges. Roll the burrito up to the top edge, forming a tight cylinder. Repeat with the remaining ingredients.

Tightly wrap individual burritos with plastic wrap and freeze until ready to serve. Heat in the microwave until hot, 4 to 5 minutes, before serving.