Baking these blondies in a muffin tin means you get 12 individually portioned treats, perfect for a bake sale, a party, or sharing with friends.
Adjust oven rack to middle position and heat oven to 350 degrees. Line 12-cup muffin tin with 12 paper liners.
In medium bowl, whisk together flour, baking powder, and salt.
In large bowl, whisk brown sugar and melted butter until smooth. Add eggs and vanilla and whisk until smooth.
Add flour mixture and use rubber spatula to gently stir until just combined. Stir in white chocolate chips.