Food & Cooking Recipes Breakfast & Brunch Recipes Apple-Oatmeal Muffins Be the first to rate & review! By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on October 1, 2018 Rate Print Share Prep Time: 30 mins Total Time: 45 mins Yield: 12 Macintosh apples and a double dose of oats add a boost of nutrition to these crowd-pleasing muffins. Ingredients 1 ½ cups all-purpose flour 1 cup quick-cooking oats 2 ¼ teaspoons baking powder 1 teaspoon coarse salt ½ teaspoon ground cinnamon ¾ cup sugar 2 large eggs 1 stick unsalted butter, melted and cooled ½ cup whole milk 1 Macintosh apple, peeled and cut into ¼-inch dice (1 ¼ cups) Crumb Topping for Muffins(optional) Directions Preheat oven to 350 degrees. Line a standard 12-cup muffin tin with baking cups. In a medium bowl, whisk together flour, oats, baking powder, salt, and cinnamon. In a separate bowl, whisk together sugar, eggs, butter, and milk. Stir wet ingredients into dry ingredients, then stir in apple. Divide batter evenly between muffin cups, adding a scant 1/4 cup to each. Sprinkle with crumb topping if desired. Bake until tops spring back when lightly touched, about 20 minutes. Cool in pans 5 minutes, then remove to wire rack to cool completely. Mike Krautter Rate It Print