2 1/4 cups all-purpose flour, divided
1/2 cup ground almonds
1/2 cup confectioners' sugar
1 tablespoon fresh orange zest, divided
1 cup butter, softened
1 3/4 cups sugar
4 large eggs
1/3 cup fresh orange juice
1/2 teaspoon orange extract
1/2 teaspoon baking powder
Preheat oven to 350 degrees.
Bake for 20 minutes, or until lightly browned.
In a medium bowl, whisk together sugar, eggs, orange juice, remaining 2 teaspoons orange zest, and extract. Combine remaining 1/4 cup flour and baking powder; add to sugar mixture, whisking to combine. Pour over crust.
Bake for 20 minutes, or until set. Sprinkle with confectioners sugar, if desired. Cut into squares to serve.