Spiced Apple Muffins
Ingredients

Serves: 12

2 cups flour
3 1/2 teaspoons baking powder
1/2 teaspoon salt
1/2 cup granulated sugar
1 cup chopped peeled apple
1 egg, lightly beaten
1 cup milk
1/3 cup melted butter
2 tablespoons brown sugar
1/4 teaspoon cinnamon
1/4 teaspoon nutmeg

Directions:
1 Pre-heat oven to 180 degrees
2 Mix together flour, baking powder, salt and sugar.
3 Mix in apple, cover completely.
4 Add egg, milk, and butter.
5 Pour 3/4 full into greased muffin tins.
6 Mix topping together and sprinkle over unbaked muffins.
7 Bake for 15-20 minutes or until brown.
8 Eat them.

what does the term baking is a science mean ?

what were the key baking tips we discussed for muffins  ?