heat oven to 350 degree's line a 9 inch square baking pan with greased aluminum foil not parchment paper. (Caramel will stick to paper)
In a double boiler melt the butter and chocolate together medium heat stir until melted.
mix sugar with eggs until well mixed. add the
chocolate /butter mixture to it and combine well.
Add the flour a little at a time. add vanilla,and the nuts.Combine real well. Do not beat. Mix with spoon.Pour enough batter in the bottom of the ban to coat about an inch. Top with thin pretzel rings.Then top with the rest of brownie mixture.Top the batter with the cut up caramels.Salt if you want salted caramel. use sea salt only.Put in oven and bake for 30 minutes,or until done.
cool well.Then lift the foil out of the pan.unwrap foil from sides of brownies.melt chocolate chips and shortening together in microwave. Check and stir frequently until melted.Drizzle over cool caramel and let cool again. Cut in to squares with a nice sharp knife.Enjoy