Oats and Buttermilk Snack Cake
You can never have too many dessert recipes, so give Oats and Buttermilk Snack Cake If you have baking powder, oat flour, flour, and a few other ingredients on hand, you can make it. From preparation to the plate, this recipe takes roughly 45 minutes. Oats Spiced Buttermilk - Oats Neer More - Indian Oats s, Blueberry Buttermilk Snack Cake, and  Overnight Porridge Pancakes with Rolled Oats and Buttermilk are very similar to this recipe.
Combine buttermilk and oats; cover and refrigerate 8 hours.
Lightly spoon flours into a dry measuring cup; level with a knife.
Combine flours, baking powder, baking soda, and salt, stirring with a whisk.
Place sugar and butter in a large bowl; beat with a mixer at medium speed until light and fluffy.
Add vanilla and egg; beat until well blended. Stir in oat mixture; beat until well blended.
Add flour mixture, beating just until moist.
Spoon batter into a 13 x 9-inch baking pan coated with cooking spray.
Bake at 375 for 30 minutes or until a wooden pick inserted in center comes out clean. Cool 10 minutes in pan on a wire rack.
Garnish with powdered sugar, if desired.