1¾cups(218.75g)all-purpose flourweighed in grams or spooned and leveled
½teaspoonbaking soda
¼teaspoonbaking powder
¼teaspoonsalt
1cup(1)fresh blueberriesfrozen can be used but do not thaw
6tablespoons(88.72ml)vegetable oilor other neutral oil
⅔cup(133.33g)granulated sugar
1teaspoonvanilla extract
1largeeggroom temperature
¼cup(60g)sour creamroom temperature
1cup(240g)mashed bananasoverripe (2-3 medium bananas)
Instructions
Preheat oven to 400°F and fill a muffin pan with liners.
In a medium bowl, whisk together the flour, baking soda, baking powder, and salt. Toss in the blueberries to lightly coat in flour mixture.
In a large bowl, whisk together the vegetable oil and sugar really well. Mix in the vanilla, egg, and sour cream, followed by the mashed bananas.
Gently fold the dry ingredients into the wet ingredients just until the flour streaks disappear.
Evenly distribute the batter into 12 muffin liners and bake on the middle rack at 400°F for 5 minutes. Then, without opening the oven, reduce the temperature to 350°F and continue to bake until a toothpick comes out clean (about 15-20 more minutes; 20-25 minutes total).
Once the muffins are cool enough to touch, transfer them to a wire rack to cool completely.
Notes
These muffins are best enjoyed the day after making them so that the flavor and texture have had time to fully develop!Storage: Store cooled muffins in an airtight container at room temperature for up to 5 days or in the freezer for 1 month.Nutrition: The provided nutrition information is an estimate for 1 muffin. Accuracy is not guaranteed.Jumbo Muffins: Fill jumbo muffin liners and bake at 425°F for 5 minutes then reduce temperature to 375°F and bake until a toothpick comes out clean (about 20-25 minutes total).Mini Muffins: Bake mini muffins at 350°F for 10-15 minutes.