Preheat oven to 420F. Once you put the muffins into the oven, lower the temperature to 375F.
- Sift 2 cups of flour together with baking soda and baking powder.
- Mix in salt and sugar.
- In another bowl mix eggs, egg yolks, oil, melted butter, buttermilk, and vanilla.
- Add wet ingredients to your dry ingredients and mix with a spatula to combine. Be careful not to over-mix.
- Mix in your blueberries coated with the flour (1.5 to 2 tablespoons is needed for this). Add the mix into the batter.
- Fill prepared muffin cups with batter.
- Lower the oven temperature to 375F and bake for 20 minutes.
- Cool on a wire rack. Enjoy!