Whole Wheat M&M Oatmeal Cookies. You can have Whole Wheat M&M Oatmeal Cookies using 9 ingredients and 9 steps. Here is how you cook that. Ingredients of Whole Wheat M&M Oatmeal Cookies You need 1/2 cup of butter. Prepare 1/2 cup of brown sugar. Prepare 1 of egg. You need 2 teaspoons of vanilla extract. […]