Preheat oven to 375 degrees F.
In a frying pan, cook pork sausage until completely cooked through. Drain and set aside.
In a mixing bowl, combine eggs and milk and whisk together.
Heat a small amount of oil or butter in a frying pan over medium-low heat, then transfer eggs to frying pan.
Let the eggs sit for a few seconds, then gently stir with a spatula, pushing from the edges towards the center. Continue stirring until the eggs are mostly set but slightly glossy and soft. Remove from heat and set aside.
Layer the tortillas on the baking sheet. Place 2-3 tortillas in the center of the baking sheet and the other tortillas so that half the tortilla hangs over the edge of the baking sheet. Continue until the sheet pan has been covered completely making sure there aren't any gaps.
Layer the sausage in the center of the tortillas and spread evenly.
Next, add the scrambled eggs over top of the sausage and spread evenly.
Sprinkle generously with cheese.
Add 2-3 tortillas in the center of the baking sheet over top of the beef and cheese mixture, then fold in the tortillas around the edges, once again making sure there aren't any gaps left.
To make sure the tortillas remain in place while baking, take another baking sheet and place it on top of the sheet pan tacos for a few minutes while baking. This will make it so the tortillas don't unfold while baking. (Remove after 5 minutes of baking).
Bake for 10-15 minutes until the top of the sheet pan tacos are golden brown.
Remove from heat and serve with your favorite toppings.
Enjoy!