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First things first, get your oven preheating to 375°F (190°C) and line a 12-cup muffin tin with paper liners. Then, peel, core, and dice your apples into small, uniform pieces. I usually aim for about 1/4 to 1/2 inch cubes. This is where I always get a little messy, apple peels everywhere! Toss the diced apples in a medium bowl with 1 tablespoon of granulated sugar, 1 tablespoon of brown sugar, 1/2 teaspoon of cinnamon, and a pinch of nutmeg. Give it a good stir to coat them all. They’ll soften slightly while you work on the rest.
02 -
In a separate small bowl, let’s make that glorious crumble. Combine 1/2 cup all-purpose flour, 1/4 cup rolled oats, 1/4 cup packed light brown sugar, 1/2 teaspoon ground cinnamon, and a tiny pinch of salt. Now, cut in 3 tablespoons of cold unsalted butter. You can use a pastry blender, two forks, or just your fingertips—I usually go with my fingers because it's quicker and I like the feel. Work it until the mixture resembles coarse crumbs. Don't overmix, you want those little buttery bits for crunch! Set this aside for a bit.
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In a large bowl, cream together 1/2 cup softened unsalted butter and 1/2 cup granulated sugar until light and fluffy. This is where the magic starts to happen, you can see it getting pale and airy! Beat in 2 large eggs, one at a time, making sure each is fully incorporated before adding the next. Don't worry if it looks a little curdled, it'll come together. Stir in 1 teaspoon of vanilla extract. In another bowl, whisk together 1 1/2 cups all-purpose flour, 1 1/2 teaspoons baking powder, 1/2 teaspoon baking soda, and 1/4 teaspoon salt. Add the dry ingredients to the wet ingredients in three additions, alternating with 1/2 cup milk, beginning and ending with the dry. Mix until just combined. Don't overmix, seriously! Lumps are okay.
04 -
Divide about two-thirds of the cupcake batter evenly among the 12 lined muffin cups. Each cup will get a spoonful or two. Now, take your spiced apple mixture and spoon a generous tablespoon or so over the batter in each cup. You don’t need to be super neat, a little rustic charm is good! Gently press the apples down a bit into the batter. Then, dollop the remaining cupcake batter over the apples in each cup, spreading it carefully to cover. This creates a lovely apple layer in the middle. I sometimes get a bit messy here, but it’s fine, it bakes out!
05 -
Finally, sprinkle your prepared crumble topping generously over each cupcake. Make sure every single one gets a good crown of that buttery, oat-y goodness. Don't be shy! Pop the muffin tin into your preheated oven. Bake for 18-22 minutes, or until a wooden skewer inserted into the center of a cupcake comes out clean, or with just a few moist crumbs. My oven runs hot, so I usually check at 18 minutes. The kitchen will smell absolutely incredible, like pure autumn heaven!
06 -
Once they’re golden brown and baked through, carefully remove the muffin tin from the oven. Let the Apple Crumble Cupcakes cool in the tin for about 5 minutes before transferring them to a wire rack to cool completely. The smell of warm apples and cinnamon wafting through the house is just the best. I always sneak one when it's still warm, even though I know I should wait. They look so inviting, with that golden crumble on top and the peek of apple inside. Enjoy!