Blackberry Muffins

4 tablespoon unsalted margarine (not butter)
1 cup sugar
1 cup milk
1 egg, beaten
1 1/3 cup flour
2 teaspoon baking powder
3/4 teaspoon cinnamon
3/4 teaspoon nutmeg
1/4 teaspoon salt
1/2 teaspoon, vanilla extract
1 cup blackberries

Oven at 325oF. Grease 12 regular or 6 jumbo muffin tins heavily. Cream the margarine and the sugar together. Add the egg, baking powder, spices, salt, vanilla, and half the flour, and mix well. Gently fold in the remaining flour. Divide the batter evenly among the muffin tins, and place a few blackberries on the top of each. Bake 20-30 minutes (longer for jumbo muffins). Allow to cool for 5-10 minutes before removing from tins. Cool on a rack.