Amish Friendship Muffins

1 cup Amish Friendship Bread Starter
2 cups all-purpose flour
3/4 cup oil
1 teaspoon baking soda
2 teaspoons baking powder
1 cup granulated sugar
3 eggs
1 1/2 teaspoons cinnamon
2 teaspoons vanilla extract
1 cup nuts, chopped
1 cup apples, chopped (optional)
1 cup raisins or 1 cup blueberries (optional)

Heat oven to 350 degrees F. Liberally grease muffin tins if not using liners.

Combine starter, flour, oil, baking soda, baking powder, sugar, eggs, cinnamon and vanilla extract; stir well. Add nuts. Stir in optional ingredients, if desired. Mix well. Put into

Mix Well. Put into muffin tins. Sprinkle each muffin with Topping and bake for 15 to 20 minutes or until done.

Topping:
1 cup brown sugar
1/2 cup all-purpose flour
1/4 cup margarine

Mix well and sprinkle over tops of muffins before baking.