01 -
Throw all the frangipane stuff into a food processor or blender. Blend away until it's smooth and creamy.
02 -
Set the oven to 350°F (175°C). Prep an 8x8-inch baking dish by lining it with parchment paper, making sure it hangs over the edges on all four sides.
03 -
Pop the butter, white sugar, and brown sugar into a microwave-safe bowl and heat in the microwave or set it over a double boiler. Let the butter melt completely, then stir until it's sugary-thick and caramel-like, about 2 minutes. Mix in the egg, vanilla, and almond extract. Last, gently fold in the flour and salt—don't overdo it!
04 -
Spread the blondie dough evenly into the prepared pan. Spoon the smooth frangipane on top. Scatter the sliced almonds over everything.
05 -
Bake for 30-34 minutes, or until the edges look golden and the middle has puffed up. Make sure not to overbake! Let it cool until it reaches room temperature.
06 -
Sprinkle powdered sugar on the top, cut into squares, and dig in.