Combine flour, powdered sugar, almond flour, and baking powder in the bowl of a food processor.
Process until combined, about 1 minute.
Add butter slices, pulsing after each, until combined.
With processor running, add egg and yolk.
Process until a smooth dough forms.
Turn dough out onto a piece of parchment paper.
Roll into a circle that is ¼-inch thick.
Fit into tart pan.
Press dough to fit.
Using edge of pan, remove excess dough.
Cover pan with plastic wrap.
Refrigerate for at least 30 minutes.
While crust is chilling, heat oven to 350℉/177℃.
Bake for 12-15 minutes, until just starting to lightly brown.
Remove from oven and set aside to cool.