Apple Crumb Muffins

• Topping
• 1 stick unsalted butter, melted
• 1 cup packed brown sugar
• 3/4 cup all-purpose flour
• 1/4 cup rolled oats
• 2 teaspoons ground cinnamon
• 1/4 teaspoon kosher salt
• Muffins
• 2 1/2 cups all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon kosher salt
• 1 1/2 cups packed brown sugar
• 2/3 cup vegetable oil
• 1 egg
• 1 cup sour cream
• 1 teaspoon pure vanilla extract
• 3 Granny Smith apples, peeled, cored, and diced

1. Stir together the butter, brown sugar, flour, oats, cinnamon, and salt in a small bowl to combine. Set aside.
2. Preheat the oven to 325u0b0F. Line two standard muffin tins with paper liners.
3. Whisk together the flour, baking soda, and salt in a medium bowl. Set aside.
4. Beat the brown sugar and vegetable oil in the bowl of an electric mixer on medium speed for about 2 minutes, until light and fluffy. Add the egg, sour cream, and vanilla extract and mix until well combined. With the mixer on low speed, add the flour mixture mixture in three additions, blending until just combined. Fold in the apples.
5. Using an ice cream scoop, scoop the batter into the muffin cups. Distribute the topping evenly over the batter. Bake for about 30 minutes, until a cake tester comes out clean and the top is golden brown. Remove from the oven and let cool for 10 minutes. Transfer the muffins to a wire rack and let cool completely.

topping, unsalted butter, brown sugar, flour, rolled oats, ground cinnamon, kosher salt, muffins, flour, baking soda, kosher salt, brown sugar, vegetable oil, egg, sour cream, vanilla, apples

Taken from food52.com/recipes/26832-apple-crumb-muffins (may not work)