01 -
In a mixing bowl, whisk together the egg, vegetable oil, sour cream, and vanilla extract until thoroughly blended.
02 -
Add granulated sugar to the wet ingredients and stir until fully integrated and smooth.
03 -
In a separate bowl, sift together the all-purpose flour, baking powder, baking soda, salt, and cornstarch.
04 -
Gradually fold the dry ingredients into the wet mixture, mixing gently until just combined to maintain a tender texture.
05 -
Incorporate your choice of toppings such as chocolate chips, sprinkles, lemon zest, or poppy seeds for added flavor and texture.
06 -
Using a small cookie scoop, evenly distribute the batter into a greased or lined mini muffin pan.
07 -
Bake in a preheated oven at 350°F (177°C) for 12 to 15 minutes, or until a toothpick inserted in the center comes out clean.
08 -
Allow the mini muffins to cool in the pan for 5 minutes before transferring to a wire rack to cool completely.