Taking its cue from almond croissants, these easy no-fail almond croissant blondies have the texture of chewy sugar cookies and the rich flavor of a classic French pastry.
Add all ingredients to a blender, and process until smooth. (See Notes if you don't have a blender.)
For the Blondies:
Prep. Preheat the oven to 350F. Line an 8 by 8-inch baking pan with parchment paper so it hangs over all 4 sides.
Make the batter. Heat the butter, white sugar, and brown sugar in a large microwave-safe bowl in the microwave, or in a double boiler on the stovetop. Once the butter is melted, stir until the sugar is fully dissolved and mixture is thick like caramel (this takes about 2 minutes). Stir in the egg, vanilla extract, and almond extract. Then stir in the flour and salt, being careful not to over-mix.
Assemble the blondies. Spread the blondie batter evenly into the bottom of the prepared baking dish. Drizzle on the frangipane. Sprinkle on the sliced almonds.
Bake. Bake until the outside is golden and the center is puffed, about 30 to 34 minutes. Be careful not to over-bake!
Cool. Cool to room temperature, and then dust the top with powdered sugar, cut, and serve.
Notes
Instead of a High-Speed Blender: To make the frangipane, you can use a blender, food processor, stand mixer, or hand-held electric mixer. Or you can mix it by hand and just stir vigorously!
Storage: You can store these bar cookies in an airtight container at room temperature for up to 3 days, in the fridge for up to 1 week, or in the freezer for up to 3 months.