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Preheat oven to 350 Line a 12-cup muffin pan with cupcake liners.
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In a small bowl, whisk together the flour, baking powder, baking soda, and salt. Set aside.
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Puree oranges in a blender or food processor until it becomes the consistency of a pulpy juice. Measure out ½ cup of the pureed oranges.
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In a medium bowl, combine the ½ cup pureed oranges, eggs, buttermilk, vanilla, orange extract, sugar, and vegetable oil.
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On low speed, gradually add the flour mixture into the pulp mixture, beating just until combined.
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Fill cupcake liners about ⅔ full and bake for 20 minutes or until a toothpick inserted into the center comes out clean.
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Cool for 2 minutes in the pan before transferring to a wire rack to cool completely.