Bake or fry tater tots according to package directions. Make sure they’re a little on the crisp side. Warm tortillas in the oven or microwave; keep warm and soft.
Brown breakfast sausage in a large skillet, breaking it up as you go along.
Mix eggs, half and half, salt, and pepper, and beat with a fork or whisk until totally combined. Melt butter in a skillet over medium heat and cook the eggs, scrambling them until they’re in smaller pieces and no longer wet.
To assemble, add ingredients to the middle 1/3 of a warm tortilla in this order: cheese, eggs, sausage, tater tots, chopped onion, jalapeno, and tomato slices. Wrap one side of the tortilla, then the other. Wrap burrito tightly in a square of foil and keep warm. Reheat in the oven if necessary.
Serve with salsa on the side.