I made these several times last week. Halfway between a cookie bar and candy, they are very fast (although they take a while to cool–over an hour at room temp before they are easy to cut up) and easy and yummy. I found the recipe several years ago in an old green cookbook by Meta Givens.
Melt 1/3 cup butter in a 4 cup pyrex (or similar) measuring cup. Add 1/2 cup brown sugar, 1/4 cup honey (the original recipe calls for corn syrup). Stir up. Add 2 cups of rolled (original or quick) oats and 1/2 teaspoon salt and some vanilla and mix it all together. Spread into an oiled 8″x8″ square pan and bake in preheated 450 degree oven for 10-12 minutes. Remove & turn off oven. Sprinkle with 1 cup semi-sweet chocolate chips. Put back in oven for 2 minutes. Take out and spread the melted chocolate evenly over the top of the toffee. Cool completely before cutting into small squares. 🙂