Preheat oven to 350 degrees. Combine flour, sugar and 1/4 cup almonds in medium bowl; cut in butter until mixture resembles coarse crumbs. Press into ungreased 9x13 baking pan. Bake for 15 minutes.

Combine sweetened condensed milk, toffee bits, egg and vanilla in small bowl. Pour over hot, partially baked crust. Top with remaining almonds. Continue baking for 23-27 minutes or until golden brown. Cool completely and cut into squares.