Preheat oven to 350 degrees F and line or grease a cupcake pan. We made mini muffins and mini bundt cakes but any shape will work.
Combine wet ingredients in a large bowl, stirring together. Add flour, baking powder and salt, stir until almost combined then toss in the blueberries. Stir one more time but only until all ingredients are incorporated.
Fill muffin pans almost all the way full and bake for 15-18 minutes.
Sift powdered sugar on top and serve immediately (or skip the powdered sugar and store in the fridge or freezer.)