Blueberry Oatmeal Muffins

Ingredients:
1 cup old-fashioned oats
2 cups buttermilk 
2/3 cups whole wheat flour
1 cup flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
3/4 cup brown sugar
2 eggs
2 Tablespoons oil
2 eggs
1 tablespoon grated orange zest
1 cup fresh or frozen blueberries
1/2 cup chopped walnuts
-Combine oats and milk (I did not have buttermilk and used soured milk instead) and set aside. Sift flour, baking powder, baking soda and salt. Stir in sugar and orange zest. Beat eggs and add to oats and milk. Gradually stir in dry ingredients. Fold in nuts and blueberries. Fill greased muffin tins 3/4 full and bake in 350 degrees preheated oven 18-25 minutes depending on muffin size.