Blueberry Walnut Oatmeal Muffin Tops

Ingredients (13)

• 1 cup quick oats
• 1 cup buttermilk
• 1 egg
• 1/2 cup brown sugar
• 1/2 tsp vanilla extract
• 1/3 cup vegetable oil
• 1 1/4 cups flour
• 1/2 tsp baking soda
• 1/2 tsp salt
• 1 tsp baking powder
• 1/2 tsp cinnamon
• 1 cup fresh blueberries/ or frozen blueberries; thawed
• 1 cup chopped walnuts