My Homemade Twix Bars.

1. Cream together 1 cup butter and 1/2 cup powdered sugar.
2. Add 1/2 tsp. salt and 2 cups flour and mix well.
3. Pat into a 9" x 13" greased baking pan. Bake at 350* for 15-20 minutes.
4.  Carefully spoon hot caramel filling onto shortcake crust.
5.  Place 4-6 chocolate bars on the top and let it melt; spread with a knife once melted.
6.  Refrigerate!!  

Caramel Filling
1 cup brown sugar
1 teaspoon white flour
1/2 cup butter
2 egg yolks
2/3 cup evaporated milk
1 teaspoon vanilla

Combine brown sugar, flour, butter, egg yolks, and evaporated milk. Bring to a boil, stirring, for 10 minutes. Remove from heat.