Whole Grain (Or Not) Apple Buttermilk Muffins - cooking recipe

Ingredients

2 2 1/2 cups freshly ground soft wheat flour or 2 3/4 cups freshly ground oat flour
1/2 cup packed brown sugar
2 teaspoons baking powder
1 teaspoon baking soda
1/2 teaspoon salt
2 teaspoons cinnamon
1 cup buttermilk
1/4 cup vegetable oil or 1/4 cup canola oil
2 teaspoons vanilla extract
1 large egg
2 medium apples (I prefer Granny Smith)
1/2 cup walnuts, chopped
Topping
1 tablespoon sugar
1 teaspoon ground cinnamon

Preparation

Preheat oven to 400*. In large bowl, mix first 6 ingredients.
In a small bowl, with wire whisk or fork, beat buttermilk, vegetable oil,vanilla, and egg until blended; stir into flour mixture just until moistened (batter will be lumpy). Fold in apples and walnuts.
In cup,mix sugar and cinnamon. Spoon batter into muffin cups; sprinkle with cinnamon sugar. Bake muffins 25 minute or until they test done.
Immediately remove from pan; cool on wire rack. Makes 12 muffins.
**Note**.
When using freshly ground flour, you generally increase the amount of flour by 1/4 cup for each cup called for in a recipe.
I THINK if you are using store bought wheat flour, you can substitute cup for cup.
Also, I keep a cinnamon/sugar shaker full in my kitchen and just grab that and sprinkle the tops of the muffins liberally - I think I probably end up using more than the recipe calls for -- .