Warm Cinnamon Apple Oat Muffins

Quick Recipe Version (TL;DR)

• Yield: 12 muffins
• Prep Time: 20 minutes
• Cook Time: 20 minutes
• Total Time: 50 minutes, including 10 minutes cooling

Quick Ingredients

• 1 cup old-fashioned rolled oats
• 1 cup buttermilk
• 3/4 cup all-purpose flour
• 1/2 cup white whole wheat flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 2 teaspoons ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1/2 teaspoon fine salt
• 1/2 cup packed light brown sugar
• 2 tablespoons granulated sugar
• 2 large eggs
• 1/3 cup neutral oil
• 1/4 cup unsweetened applesauce
• 1 teaspoon vanilla extract
• 1 1/2 cups finely diced apple
• For topping: 2 tablespoons rolled oats, 1 tablespoon brown sugar, 1/2 teaspoon cinnamon, and 1 tablespoon melted unsalted butter

Do This

• 1. Heat the oven to 375°F and line a 12-cup muffin pan.
• 2. Stir the oats and buttermilk together; let stand for 10 minutes.
• 3. Whisk the flours, baking powder, baking soda, cinnamon, nutmeg, and salt.
• 4. Whisk the sugars, eggs, oil, applesauce, and vanilla into the oat mixture.
• 5. Fold the dry ingredients into the wet ingredients, then fold in the diced apples.
• 6. Divide the batter among the muffin cups and sprinkle with cinnamon oat topping.
• 7. Bake for 20 minutes, then cool in the pan for 10 minutes before serving.

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Why You’ll Love This Recipe

• Warm bakery aroma: Plenty of cinnamon, tender apples, and toasted oats make your kitchen smell cozy and inviting.
• Hearty but soft texture: Rolled oats add a wholesome chew while buttermilk keeps the crumb moist and tender.
• Simple everyday ingredients: Everything is easy to find and easy to mix by hand, with no stand mixer needed.
• Great for busy mornings: These muffins keep well, freeze nicely, and make a satisfying breakfast or snack.

Grocery List

• Produce: 2 medium crisp apples, such as Honeycrisp, Gala, Fuji, or Pink Lady
• Dairy: Buttermilk, large eggs, unsalted butter
• Pantry: Old-fashioned rolled oats, all-purpose flour, white whole wheat flour, light brown sugar, granulated sugar, neutral oil, unsweetened applesauce, baking powder, baking soda, ground cinnamon, ground nutmeg, fine salt, vanilla extract, muffin liners

Full Ingredients

Oat Soak

• 1 cup old-fashioned rolled oats
• 1 cup well-shaken buttermilk

Dry Ingredients

• 3/4 cup all-purpose flour, spooned and leveled
• 1/2 cup white whole wheat flour, spooned and leveled
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 2 teaspoons ground cinnamon
• 1/4 teaspoon ground nutmeg
• 1/2 teaspoon fine salt

Wet Ingredients

• 1/2 cup packed light brown sugar
• 2 tablespoons granulated sugar
• 2 large eggs, at room temperature if possible
• 1/3 cup neutral oil, such as avocado oil, canola oil, or vegetable oil
• 1/4 cup unsweetened applesauce
• 1 teaspoon vanilla extract

Apples

• 1 1/2 cups finely diced apple, cut into 1/4-inch pieces, from about 2 medium apples

Cinnamon Oat Topping

• 2 tablespoons old-fashioned rolled oats
• 1 tablespoon packed light brown sugar
• 1/2 teaspoon ground cinnamon
• 1 tablespoon unsalted butter, melted

Step-by-Step Instructions

Step 1: Preheat the oven and prepare the pan

Place a rack in the center of the oven and preheat to 375°F. Line a standard 12-cup muffin pan with paper liners, or lightly grease each cup with baking spray. This recipe makes 12 hearty muffins, so use a standard muffin tin rather than a mini muffin pan.

Step 2: Soak the oats

In a large mixing bowl, stir together 1 cup rolled oats and 1 cup buttermilk. Let the mixture stand for 10 minutes. This short soak softens the oats, helps them blend into the batter, and gives the muffins a moist, satisfying texture instead of a dry or crumbly one.

Step 3: Mix the dry ingredients

In a medium bowl, whisk together the all-purpose flour, white whole wheat flour, baking powder, baking soda, 2 teaspoons cinnamon, nutmeg, and salt. Whisk well for about 20 seconds so the leavening and spices are evenly distributed. This helps every muffin rise evenly and taste warmly spiced.

Step 4: Finish the wet mixture

To the soaked oat mixture, add the light brown sugar, granulated sugar, eggs, oil, applesauce, and vanilla extract. Whisk until the eggs are fully incorporated and the mixture looks cohesive, about 30 to 45 seconds. It is normal for the oats to make the mixture look slightly textured.

Step 5: Combine the batter

Add the dry ingredients to the wet ingredients. Use a flexible spatula to fold the batter together just until no large streaks of flour remain. The batter will be thick and rustic. Avoid vigorous stirring, which can make muffins tough instead of tender.

Step 6: Fold in the apples

Add the 1 1/2 cups finely diced apple and gently fold until evenly distributed. Small 1/4-inch pieces work best because they soften during baking and give little pockets of sweet apple in every bite. Let the batter rest for 5 minutes while you prepare the topping.

Step 7: Make the cinnamon oat topping

In a small bowl, stir together 2 tablespoons rolled oats, 1 tablespoon brown sugar, 1/2 teaspoon cinnamon, and 1 tablespoon melted butter. The mixture should look like a lightly moistened crumble. This topping bakes into a fragrant, slightly crisp finish that makes the muffins feel bakery-style.

Step 8: Fill and bake the muffins

Divide the batter evenly among the 12 muffin cups, filling each cup nearly to the top. Sprinkle the cinnamon oat topping evenly over the batter. Bake at 375°F for 20 minutes, or until the muffin tops are domed and golden and a toothpick inserted into the center of a muffin comes out clean or with a few moist crumbs.

Step 9: Cool and serve

Let the muffins cool in the pan for 10 minutes, then transfer them to a wire rack. They are wonderful warm, when the cinnamon aroma is strongest and the apple pieces are tender. For a cozy serving, split a muffin and add a small pat of butter or a drizzle of honey.

Pro Tips

• Dice the apples small: Aim for 1/4-inch pieces so the apples soften fully and distribute evenly through the muffins.
• Do not skip the oat soak: Ten minutes in buttermilk makes the oats tender and gives the muffins their hearty, moist crumb.
• Measure flour lightly: Spoon flour into the measuring cup and level it off. Scooping directly from the bag can pack in too much flour and make the muffins dry.
• Mix gently: Once the flour is added, fold only until combined. A few tiny lumps are better than overmixed batter.
• Choose crisp apples: Honeycrisp, Gala, Fuji, Pink Lady, or Braeburn hold their shape nicely and bring natural sweetness.

Variations

• Apple walnut oat muffins: Fold in 1/2 cup chopped toasted walnuts or pecans with the diced apples for extra crunch.
• Raisin cinnamon apple muffins: Add 1/3 cup raisins or golden raisins for a classic, lunchbox-style flavor.
• Maple apple oat muffins: Replace the granulated sugar with 2 tablespoons maple syrup and add 1/4 teaspoon maple extract for a deeper fall flavor.

Storage & Make-Ahead

Store cooled muffins in an airtight container at room temperature for 2 days or in the refrigerator for up to 5 days. For the best texture, place a paper towel in the bottom of the container and another over the muffins to absorb extra moisture. To freeze, wrap each cooled muffin tightly and freeze in a freezer-safe bag or container for up to 3 months. Thaw at room temperature for about 1 hour, or microwave one muffin on 50% power for 30 to 45 seconds. You can also dice the apples and mix the dry ingredients the night before; keep the apples refrigerated in an airtight container and mix the batter just before baking.

Nutrition (per serving)

Calories: 214 kcal | Carbs: 32g | Protein: 4g | Fat: 9g | Saturated Fat: 2g | Fiber: 2g | Sugar: 15g | Sodium: 245mg | Cholesterol: 34mg