Cinnamon Apple Oat Crumble Muffins

The epitome of cozy, these apple crumble muffins are loaded with warm spices and tender apple pieces, then finished with a buttery cinnamon-brown-sugar oat streusel. Best enjoyed warm, they bake up light and fluffy—perfect for a quick breakfast or an anytime snack.

overhead shot of the muffins in a wooden box with apples

Why You’ll Love This Recipe

Flavor: bright, slightly tart apple, a buttery streusel, and plenty of cinnamon—every bite has a little apple and warm spice.

Texture: tender, bakery-style muffins with small apple chunks for pleasant chew, topped with a crisp brown-sugar oat crumble.

Simple to make: this batter comes together in one bowl by hand—no stand mixer required. Make the batter ahead and bake fresh muffins just before serving.

stack of three apple streusel muffins. the top muffin has a bite removed

Ingredients

These muffins use common pantry items plus a standard muffin tin and liners (optional).

  • Rolled oats—for the streusel and extra texture.
  • Sugars—granulated sugar in the batter and brown sugar in the crumble for depth.
  • Baking powder—gives the muffins a tall, tender rise.
  • Spices—cinnamon, a touch of ginger and nutmeg for cozy warmth.
  • Dairy & fat—an egg, full-fat Greek yogurt, whole milk, melted unsalted butter (used in batter and streusel). Room-temperature dairy yields best results.
  • Neutral oil—vegetable or canola oil keeps the crumb tender.
  • Apples—choose firm varieties such as Honeycrisp or Granny Smith so the pieces hold their shape while baking.

See the recipe card below for exact quantities and measurements.

Substitutions

  • Dairy: Full-fat sour cream or buttermilk can replace Greek yogurt.
  • Oil: Any neutral-flavored oil works.
  • Sugar: Light or dark brown sugar may be used interchangeably in the streusel.
  • Fruit: Pears (firm variety) can substitute for apples in equal measure.

Variations

Ways to customize these apple crumble muffins:

  • Grated apples: If you prefer a finer distribution of apple, grate the apples and fold them into the batter.
  • Glaze: Drizzle a maple or cinnamon glaze over the streusel. For maple: powdered sugar plus a little maple syrup to reach drizzling consistency. For cinnamon glaze: powdered sugar plus milk or cream and ½ teaspoon cinnamon.
  • Jumbo muffins: Use a jumbo muffin pan and increase baking time by 5–7 minutes.

How to Get Tall Muffin Tops

Use these tips for high, bakery-style muffin tops:

  • Make a thick batter rather than a thin batter.
  • Fill muffin cups to the top for a domed rise.
  • Start baking at a high temperature for the first 5 minutes to quickly activate the leavening, then reduce the temperature for the remaining bake time.

How to Make This Recipe

Preheat the oven and prepare a 12-cup muffin tin with liners or a light grease. Peel, core and dice the apples, make the streusel, then mix the muffin batter.

Crumble mixture complete and ready in a bowl.

One: Combine melted butter, flour, brown sugar, rolled oats, cinnamon and a pinch of salt; mix with a fork until pea-sized crumbs form. Set aside.

Wet ingredients being poured into dry ingredients in a bowl.

Two: Whisk dry ingredients (flour, baking powder, salt, spices) in one bowl. In a separate bowl, whisk together sugar, egg, oil, melted butter, Greek yogurt, milk and vanilla.

Apple muffin batter being mixed together with a rubber spatula.

Three: Fold the wet mixture into the dry ingredients with a rubber spatula or wooden spoon until just combined—do not overmix.

Muffin batter with apples being incorporated.

Four: Gently fold in the diced apples until evenly distributed.

Batter being added to muffin tins with a large cookie scoop.

Five: Use a large cookie scoop or ice-cream scoop to fill each muffin cup to the top.

Crumble topping being added to the muffin wells.

Six: Sprinkle the streusel evenly over the muffins and bake.

Hot tip! Remove any stray streusel pieces from the pan before baking so excess sugar doesn’t burn and make cleanup harder.

Expert Tips

  • Cut apple pieces to about 1 cm so they heat through and stay tender in the muffin.
  • Use room-temperature egg, milk and yogurt for an even batter and better rise.
  • Mix until the flour is just incorporated—overmixing creates dense muffins.
  • Fill the cups fully to produce generous muffin tops.
  • Allow the oven to fully preheat (about 20 minutes for many ovens) before baking.

Recipe FAQs

What apples are best for baking?

Firm, crisp apples like Honeycrisp, Braeburn, Pink Lady or Granny Smith hold up well while baking. Honeycrisp is a favorite for flavor and texture.

What makes a muffin light and fluffy?

Avoid over-mixing so the gluten doesn’t over-develop, and use the correct amount of leavening. Gentle mixing keeps muffins tender.

What is the secret to moist muffins?

Proper ratios of sugar and fat help retain moisture; sugar attracts and holds moisture while fats (butter, oil, yogurt) keep the crumb tender.

Why are my muffins sticking to the cupcake liners?

Lower-quality liners can stick. Either spray the liners lightly or skip liners and grease the tin directly.

Storage

Store muffins at room temperature for up to three days in the muffin tin lightly tented with foil. An airtight container will keep them moist but will soften the streusel topping.

To freeze, place cooled muffins in a single layer in a zip-top bag, remove excess air, and freeze up to two months. Thaw at room temperature.

To re-crisp the tops, warm muffins in a preheated 350°F (175°C) oven for 3–5 minutes.

Tray of apple crumble muffins. One has a bite removed sitting on the top.

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📖 Recipe

Stack of three apple crumble muffins. The top has a bite removed.

Cinnamon Apple Crumble Muffins with Oats

Callan Wenner

The epitome of cozy, these apple crumble muffins are packed with warm spices and topped with a buttery cinnamon brown sugar oat streusel. Fluffy and bakery-style, they’re perfect warm from the oven.
Prep Time 15 mins
Cook Time 15 mins
Total Time 30 mins
Course Breakfast, Dessert
Cuisine American
Servings 12 muffins
Calories 314 kcal

Equipment

  • Standard muffin tin
  • Cupcake or muffin liners (optional)

Ingredients

Apple Muffins

  • 1 ¾ cups all-purpose flour (210g)
  • ¼ teaspoon kosher salt
  • 2 teaspoons baking powder
  • 1 teaspoon ground cinnamon
  • ⅛ teaspoon ground ginger
  • ⅛ teaspoon ground nutmeg
  • ⅔ cup granulated sugar (133g)
  • 1 large egg, room temperature
  • ¼ cup vegetable oil (60ml)
  • ¼ cup unsalted butter, melted (57g)
  • ½ cup full-fat Greek yogurt, room temperature (65g)
  • ¼ cup whole milk, room temperature (60ml)
  • 1 teaspoon vanilla extract
  • 2 medium apples, peeled, cored and diced (about 1½ cups / 150g)

Streusel Topping

  • ¼ cup unsalted butter, melted (57g)
  • ½ cup all-purpose flour (60g)
  • ½ cup light brown sugar (100g)
  • ½ cup rolled oats (50g)
  • ⅛ teaspoon kosher salt
  • ⅛ teaspoon cinnamon

Instructions

Streusel Topping

  • In a bowl combine the melted butter, flour, brown sugar, oats, cinnamon and salt. Mix with a fork until pea-sized crumbs form. Set aside.

Apple Muffins

  • Whisk together flour, salt, baking powder and spices in a bowl and set aside.
  • In a separate large bowl, whisk sugar, egg, oil, melted butter, Greek yogurt, milk and vanilla until combined.
  • Fold the wet ingredients into the dry with a rubber spatula or wooden spoon until just combined. Gently fold in the diced apples—do not overmix.
  • Preheat oven to 425°F (220°C). Line a standard 12-cup muffin tin with liners or grease the wells.
  • Fill each cup to the top with batter, then evenly distribute the streusel over each muffin.
  • Bake at 425°F for 5 minutes, then reduce oven temperature to 350°F (175°C) and bake for another 13–16 minutes, until a toothpick comes out clean.
  • Cool in the pan for 5 minutes, then transfer muffins to a wire rack to finish cooling.

Notes

Any firm apple works, but Honeycrisp, Braeburn, Pink Lady and Granny Smith are excellent choices. Sour cream may replace Greek yogurt—use full-fat for best texture.

Store muffins at room temperature, lightly covered, for up to three days. To refresh and re-crisp the topping, warm in a 350°F (175°C) oven for 3–5 minutes.

Optional: Make a maple or cinnamon glaze: combine 1 cup powdered sugar with 1 tablespoon maple syrup (or milk/water) to drizzling consistency; add ½ teaspoon cinnamon if desired.

The nutritional information provided is an estimate per serving.

  • Calories: 314 kcal
  • Carbohydrates: 45 g
  • Protein: 5 g
  • Fat: 13 g
  • Saturated Fat: 6 g
  • Sodium: 158 mg
  • Fiber: 2 g
  • Sugar: 24 g