Prepare and bake brownies in an 8x8 dish according to package directions. I like to under-bake mine slightly so they are a little gooey. Allow brownies to cool while you prepare the topping. Melt 1 1/2 cups chocolate chips in the microwave or over the stove top. Stir until smooth. Stir in marshmallows and 1 1/2 cups Golden Crisps. Spread over brownies. Place pretzel twists over the top (as many as you like). Melt 1/2 cup chocolate chips and drizzle over. Sprinkle with remaining 1/2 cup Golden Crisps. Allow to cool/set and serve.