Combine walnuts and maple syrup in a small bowl, stirring well.

Microwave on high for 2 minutes, stopping and stirring every 30 seconds.

Transfer walnuts to a parchment paper lined plate, spreading into a thin layer. (Be careful, the walnuts are very hot!)

Chill in refrigerator for 10 minutes.

While walnuts chill, place graham crackers in a sealed plastic bag, and crush using a rolling pin.

To assemble:

Place a thin (½”) layer of graham cracker crumbs at the bottom of one large serving dish or divide among 6 individual bowls or 18 miniature dessert cups.

Top with a layer of pudding.

Sprinkle with a layer of maple walnuts.

Top with a second layer of pudding.

At this point, you can serve the dish or cover and refrigerate.

Serve with whipped cream, if desired.