Preheat oven to 350 degrees.

In a standing mixer with a paddle attachment, cream room-temperature butter, sugar, and brown sugar together until soft and fluffy. Add egg yolk, almond extract, and salt and continue to beat mixture until incorporated. Add flour and mix until the dough comes together.

Turn dough out onto a parchment-lined, (or a silicone baking mat liner) 13″ x 9″ baking sheet. Press the dough down with your fingertips until it’s evenly dispersed throughout the pan.

Place in the preheated oven and bake for 17-20 minutes. Bars are done when the corners are no longer shiny. Turn off the oven and sprinkle the chocolate chips evenly on top of the bars.  Shut the oven door and leave in the oven for approximately one minute while the chocolate chips melt. 

Remove bars from the oven and spread the chocolate evenly over the bars. Immediately sprinkle sliced almonds evenly on top.

Wait at least one to two hours before cutting bars into squares.