Preheat oven to 375 degrees F. Grease a 16-cup muffin tin. (See note 1)
Place 8 street tacos on a microwave-safe plate. Cover the tacos with a damp paper towel and microwave for 30 seconds. Repeat with the remaining 8 tacos.
Press a tortilla into each muffin cup.
In a large measuring cup whisk together the eggs, milk, salt and pepper.
Pour the egg mixture evenly into each tortilla.
Add approximately 1 ounce of ham and 1 ounce of cheese to each tortilla.
Place in the oven and bake for 20 minutes.
Remove from oven and let cool for 3 minutes before removing from the muffin tin and serving or let cool completely, then store in an airtight container in the refrigerator or freezer until ready to use.
Notes
If you don’t have a 16-cup muffin tin, you can use a 12-cup muffin tin by reducing the amount of eggs to 6 and the milk to 2 tablespoons.