In the bowl of a hand or stand mixer fitted with the paddle attachment add the 1/2 cup butter and 1 cup sugar and mix on low-medium speed for 2 minutes.

With the mixer on low, add the 2 tbsp vegetable oil and 2 eggs one at a time on, mixing in between.

In a separate bowl combine the 1 ⅓ cup flour, 1/2 tsp baking powder, 1/4 tsp baking soda, and ¼ tsp kosher salt and mix lightly.

Alternate adding the dry and wet ingredients by thirds starting and ending with the dry ingredients.

Pour the batter into the prepared mini bundt cake pan. An easy way to do this is with a mini cookie scoop or with a kitchen tablespoon. Fill ¾ of the way full.