Expert Tips Don’t overload the tostadas: Be careful not to overload your tostadas with too many toppings, as this can make them difficult to eat. Keep them simple and balanced, with just enough ...

1 (16.3-ounce) can large refrigerated buttermilk biscuits (8 to a can) 1 egg, slightly beaten 1 cup (4 ounces) shredded Mexican cheese blend or Monterey Jack cheese, divided 1/2 cup sour cream ...