Cold Brew Brownies

Name: Cold Brew Brownies
Cuisine: American
Ingredients: 10; 1; 2; 3; 1 brownie; 3 cups; milk or semi-sweet chocolate chips; ½ cup + 3 tbsp.; heavy cream; 3 tbsp.; unsalted butter; 1 tbsp. + 2 tsp.; vanilla extract; 2 tbsp.; cold brew; 1/2 tsp.; coarse kosher salt, divided; 4; eggs; 2 cups; creamy peanut butter; 1 cup; powdered sugar; 1 cup; chopped peanuts