These Pecan Toffee Squares are the perfect indulgent treat for chocolate and toffee lovers. A filling made with HEATH Toffee Bits and pecans tops a sweet, buttery crust. Finish it off with a drizzle of melted HERSHEY'S Semi-Sweet Chocolate Chips and more HEATH Toffee Bits.
Heat convection oven to 300°F (standard oven: 350°F). Lightly spray one 18x26-inch full sheet pan with vegetable cooking spray. Place parchment paper on prepared sheet pan.
Stir together flour and powdered sugar in large bowl. Using your fingers, a fork or a pastry cutter, work butter into dry ingredients until crumbly. Press mixture into prepared pan. Bake 15 minutes.
Mix sweetened condensed milk, eggs and vanilla in 20 qt. bowl of mixer fitted with paddle attachment until well blended. Stir in 2 lbs. (5-1/3 cups) HEATH Toffee Bits and pecans; pour over prepared crust.
Bake 25 minutes* or until golden. Cool completely in pan on wire rack.
Combine HERSHEY'S Semi-Sweet Chocolate Chips and shortening in large microwave-safe bowl. Microwave at MEDIUM (50%) 30 seconds; stir. If necessary, microwave at MEDIUM an additional 15 seconds at a time, stirring after each heating, just until chips are melted and mixture is smooth. Drizzle over bars. Sprinkle with additional HEATH Toffee Bits. Allow drizzle to set; cut into 3-inch squares.
Step 4: If using convection oven, rotate pan one-half turn (180°) after 15 minutes of baking.