1Heat oven to 350°F. Line bottom and sides of 13x9-inch pan with foil. Grease bottom only of foil with shortening or cooking spray. Make and bake brownie mix as directed on box for 13x9-inch pan. Cool completely, about 1 hour.
2Using foil to lift, remove brownie from pan. Remove foil. With deep 3-inch heart-shaped cookie cutter, cut 12 brownies.
3In medium microwavable bowl, microwave caramels and whipping cream uncovered on High 1 to 3 minutes, stirring every minute, until caramels are melted.
4Arrange brownies on serving plate. Drizzle caramel mixture over brownies. Sprinkle with pecans.