Prepare caramel bits by placing caramel bits in medium saucepan. Add water; cook on medium-low heat 3 min. or until caramel bits are completely melted, stirring constantly. Pour over brownie batter spread into pan. Top with remaining brownie batter and sprinkle with chocolate chips.
Bake according to package directions. You may need to extend baking time by 5-10 minutes. Remove from oven, and drizzle on additional caramel ice cream topping if desired. Sprinkle with sea salt if desired. Serve warm or cooled. For more caramel flavor, drizzle with caramel sauce just before serving. Enjoy!