Fudge-Bottom Candy Crunch Pie

pkg. (3.9 oz.) JELL-O Chocolate Flavor Instant Pudding

cold milk

BAKER'S Semi-Sweet Chocolate, divided

OREO Pie Crust

tub (8 oz.) COOL WHIP Whipped Topping, thawed, divided

chocolate-covered toffee bars (1.4 oz. each), chopped, divided