Apple Pie Overnight Oats September 28, 2023 Apples are a great source of fiber and can be used in a variety of ways. Explore apples at your local grocery store! Prep Time: 5 minutes. Cook Time: 6 to 8 hours. Servings: 2. Ingredients 1 cup old fashioned oats. 1 cup low-fat milk. 1/2 cup low-fat vanilla Greek yogurt. 1/4 cup apple butter. 1 medium apple, diced. 1 teaspoon cinnamon. 2 tablespoons chopped walnuts (optional). Directions Stir together all ingredients in a large bowl. Cover bowl and refrigerate overnight. If desired, garnish with additional chopped walnuts and diced apples before serving.