Preheat oven to 350 degrees.
In a medium bowl, combine flour, powdered sugar, butter and salt, mix well. Press onto the bottom of a greased 7 x 11 inch baking dish and top with apple slices.
In a small bowl, beat together eggs, brown sugar, almond extract and cinnamon until well blended; pour over apples. Sprinkle almonds evenly over the top.
Bake for 35-40 minutes or until center is set. Cool completely before cutting.
Makes 18 bars.