Use firm apples like Granny Smith or Fuji for best texture. Don’t overfill the cookie cups to avoid overflow. Chilling the dough before shaping helps handling. Grease muffin tins well or use liners. For extra crunch, add chopped nuts to the filling. Adjust baking time for softer crust. Variations include adding caramel sauce, cranberries, gluten-free flour, or making a vegan version.