# What You'll Need:
→ Muffins
01 - 2 cups all-purpose flour
02 - 2 teaspoons baking powder
03 - 1/2 teaspoon baking soda
04 - 1/2 teaspoon salt
05 - 1 1/2 teaspoons ground cinnamon
06 - 1/2 cup unsalted butter, melted and slightly cooled
07 - 2/3 cup granulated sugar
08 - 2 large eggs
09 - 1/2 cup whole milk
10 - 1 teaspoon vanilla extract
11 - 1 1/2 cups peeled, cored, and finely diced apples (about 2 medium apples)
→ Streusel Topping
12 - 1/2 cup all-purpose flour
13 - 1/3 cup packed light brown sugar
14 - 1 teaspoon ground cinnamon
15 - 1/4 cup unsalted butter, cold and cubed
# How to Make It:
01 - Preheat the oven to 375°F. Line a 12-cup muffin tin with paper liners or grease well.
02 - In a large bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon.
03 - In a separate bowl, whisk the melted butter and sugar. Add eggs, milk, and vanilla extract, whisking until smooth.
04 - Pour the wet ingredients into the dry ingredients and stir gently until just combined without overmixing.
05 - Fold the diced apples into the batter until evenly distributed.
06 - Divide the batter evenly among the prepared muffin cups, filling each about three-quarters full.
07 - In a bowl, combine flour, brown sugar, and cinnamon. Cut in the cold butter with a pastry cutter or fingers until the mixture resembles coarse crumbs.
08 - Sprinkle the streusel topping evenly over the muffin batter in each cup.
09 - Bake for 20 to 22 minutes, or until a toothpick inserted in the center comes out clean.
10 - Allow the muffins to cool in the tin for 5 minutes, then transfer to a wire rack to cool completely.
