Cook brown sugar and butter in a saucepan over medium heat until butter melts and mixture is smooth. Remove from heat; cool slightly. Add eggs, 1 at a time, beating after each addition.
Combine flour, baking powder, and salt; add to sugar mixture, stirring well. Stir in brickle chips, pecans, and vanilla.
Pour batter into a greased 13" x 9" pan. Bake at 350° for 30 to 32 minutes. Cool in pan on a wire rack. Cut into bars.
Note: Find almond brickle chips next to chocolate morsels on the baking aisle.