To prepare a winner double delight peanut butter cookies recipe, first you will need to gather your ingredients. First, you'll need the following ingredients: 1 1/2 cups granulated sugar, 1 cup rolled oats, 2 tablespoons melted butter, and 1 teaspoon vanilla extract. Then, combine the dry ingredients with the wet ingredients and stir to combine. Next, add the egg and vanilla and mix until combined. Finally, stir in the flour, baking powder, salt and baking soda. Using an electric mixer, beat the mixture on medium speed until it's light and fluffy, about 2 minutes. If you don't like the texture of your cookies, cut them into squares and place them on the baking sheet lined with parchment paper. Bake the cookies for 12 to 15 minutes, or until the edges are golden brown and the center is set.