Blueberry Muffins December 29, 2021 / Preheat oven to 400 degrees F. Load muffin pan with 12 parchment muffin liners.. Make topping by combining the following with a fork to create a crumb texture: ¼ cup white sugar ¼ cup brown sugar ⅓ cup all-purpose flour ¼ cup butter, cubed 2 teaspoons ground cinnamonCombine these dry ingredients: 1 ½ cups all-purpose flour ½ cup white sugar ¼ cup brown sugar 1 teaspoon kosher salt 2 teaspoons baking powderPlace the following into a 1 cup measuring cup: ⅓ cup vegetable oil 1 egg Milk – add enough to fill to the 1 cup mark, apx. ⅓ cup.Mix the two sets of ingredients together. And fold in: 1 cup fresh blueberriesPlace muffin mix into the liners and sprinkle with the topping.Bake for 20-25 minutes or until done.