01 - Preheat oven to 400°F. Grease a 24-cup mini muffin tin generously with melted butter or nonstick cooking spray to ensure easy release.
02 - In a medium mixing bowl, whisk together flour, sugar, baking powder, baking soda, and salt until evenly distributed.
03 - In a separate bowl, whisk buttermilk, egg, melted butter, and vanilla extract until the mixture is smooth and fully incorporated.
04 - Pour the wet ingredients into the dry ingredients. Mix gently with a spatula or wooden spoon until just combined—some small lumps should remain. Avoid overmixing to prevent tough poppers.
05 - Gently fold in chocolate chips or blueberries if desired, being careful not to overwork the batter.
06 - Spoon batter into the prepared mini muffin tin, dividing evenly among the 24 cups. Fill each cup approximately three-quarters full to allow for rising.
07 - Bake for 8 to 10 minutes, or until the tops are golden brown and a toothpick inserted into the center of a popper comes out clean.
08 - Let the poppers cool in the tin for 2 minutes, then carefully remove them. Serve warm with maple syrup, melted chocolate, or fruit preserves for dipping.