

Preheat oven to 350 F.
Mix flour, 1/4 cup brown sugar, butter, egg yolks, lime zest, baking powder, and salt until crumbly and mealy.
Press into the bottom of an ungreased 4 x 8 loaf pan. Set aside.
Beat egg whites until frothy.
Add the brown sugar and lime juice a bit at a time until stiff (should look like a meringue).
Spread evenly on top of the bottom layer.
Sprinkle the sliced almonds on top evenly.
Bake in a hot oven for about 30 minutes or until the meringue is set and lightly browned.
Allow to cool completely. Take a sharp wet knife and run along the pan edge to loosen the meringue, cut into squares.
Serve at room temperature.