01 -
Line a 13x9 baking pan with parchment paper.
02 -
In a mixing bowl, combine flour, baking powder, and salt.
03 -
Melt the chocolate using a double boiler method or a heatproof bowl over a pan of simmering water.
04 -
In a stand mixer, beat butter, shortening, and sugars on medium speed until blended.
05 -
Add melted chocolate, eggs, and coffee extract, beating until smooth.
06 -
Gradually beat in the flour mixture until just combined, then stir in the white chocolate chips.
07 -
Press the dough into the prepared baking pan and bake at 350°F for 15-20 minutes, ensuring not to fully bake.
08 -
Remove from oven; top with peppermint chips, M&M bits, sprinkles, and pour over the sweetened condensed milk.
09 -
Add extra sprinkles if desired, then bake at 350°F for another 20-25 minutes or until bubbly.
10 -
Cool completely before lifting out and cutting into squares.