Salted Caramel Pretzel Bark

Recipe-Salted Caramel Pretzel Bark

1/2 bag of mini pretzel twists
2 sticks of butter (1 cup total)
1 cup of brown sugar
1 3/4 cups dark chocolate chips
Coarse Sea Salt

Preheat your oven to 350, and line a large, rimmed baking sheet with parchment paper. Throw down a single layer of pretzels. In a saucepan (medium works best), melt the butter and brown sugar together until it is bubbly and thick. Remove it from the heat and pour it over the pretzels. It will not cover all of the pretzels! (I was really concerned at this point, but I threw it in the oven anyway for 5 minutes). After the caramel-oven phase, top the whole thing with chocolate chips and use a spatula to spread the chips out a little. I put the pan back in the oven for another 5 minutes to ensure optimal melting. Take the pan out, using the spatula spread the melted chocolate throughout the pan. After five minutes, I gave the chocolate layer a sprinkle of course kosher salt, then put the whole thing in the freezer for 2 hours before breaking it up into bark. Enjoy!

I wonder what this would taste like if I used a can of sweetened condensed milk and boiled the can to make a caramel sauce, instead of using butter and brown sugar? Anyone?...