These apple cinnamon crumb muffins are soft, tender, and packed with juicy apple pieces in every bite. A buttery cinnamon crumb topping adds the perfect crunch, making them taste like a bakery-style treat you can easily bake at home. Perfect for cozy mornings or an afternoon pick-me-up.
Preheat the oven to 350℉. Line a 12-cup muffin tin with paper liners or lightly grease it.
In a medium bowl, whisk together the flour, baking powder, salt, and cinnamon. In a large bowl, whisk the granulated sugar, brown sugar, cooled melted butter, eggs, vanilla, and milk until smooth.
Add the dry ingredients to the wet mixture and stir until just combined. Do not overmix. Fold in the diced apples gently.
In a small bowl, mix the flour, brown sugar, and cinnamon. Add the softened butter and use a fork or your fingers to blend until crumbs form.
Divide the batter evenly into the muffin tin, filling each cup about ¾ full. Sprinkle the crumb topping generously over each muffin.
Bake 18-22 minutes, or until a toothpick inserted in the center comes out clean.
Let the muffins cool in the pan for 10 minutes, then transfer to a wire rack to finish cooling.
Notes
For extra lift, you can replace the leavening with 1½ teaspoons of baking powder and ½ teaspoon baking soda and use buttermilk instead of regular milk.
Dice apples into small ¼-inch cubes so they bake evenly and don’t sink to the bottom.
For a chunkier crumb topping, use melted butter instead of softened butter when mixing the streusel.
Best enjoyed the same day, but can be stored in an airtight container at room temperature for 2 days or refrigerated for up to 4 days.