Step #1 Beat mascarpone cheese, & vanilla extract In a large-ish bowl at medium speed with a heavy-duty electric stand mixer, using the whisk attachment, whipping cream, 2 to 3 mins or until smooth & firm.
Step #2 Place half of pie cubes in bottom of a 4-quart trifle dish or tall, clear 4-quart glass bowl.
Step #3 Spread half of whipped cream mixture over pie cubes.
Step #4 Drizzle with half each of chocolate fudge topping & caramel topping.
Step #5 (You might need to zap the fudge & caramel topping in the microwave for 15-25 seconds to get them to drizzling consistency).
Step #6 Sprinkle top with half of sliced pecans.
Step #7 Repeat layers.
Step #8 Cover up & chill at least 1 hr & up to 8 hrs.
Step #9 **Cook time does not include toasting the pecans, defrosting the pie, or refrigeration time.