Here's a great recipe I've modified and tried multiple times.
1 cup oatmeal
1/2 cup all-purpose flour
1/2 cup whole wheat flour
1/4 cup white sugar
1/4 cup brown sugar
1/2 tsp. salt
1/2 tsp. baking soda
1/2 tsp. cinnamon
1/2 cup oil
3/4 cup buttermilk (add 1 tablespoon vinegar to regular milk)
1 cup of berries or raisins or chocolate chips or...
Mix dry ingredients. Stir in liquid ingredients. Add berries.
Bake at 350 degrees Fahrenheit for 25 minutes. Cool in pan for 10 minutes. Makes 12.
September 7th Update:
I'm passing around a plate of these muffins at THE COUNTRY COOK'S weekend potluck. Lots of tasty recipes to try this week!