Step 1: Prepare Chocolate Frosting: Place chocolate chips in medium bowl. In a small saucepan, heat the heavy cream without boiling. Pour the hot cream over the chocolate chips and let stand for 5 minutes. Stir the mixture until it is homogeneous. Then whisk in the corn syrup and vanilla extract. Use the mixture immediately.
Step 2: Dip waffles in chocolate frosting, then sprinkle with toppings: coconut, chopped pistachios or walnuts, or sugar pearls. Leave to stand at room temperature for the mixture to set (at least 1 hour).
Step 1: Prepare the cinnamon sugar: In a brown paper bag, shake together the sugar and ground cinnamon.
Step 2: Toast waffles or microwave to reheat.
Step 3: Toss the hot waffles with the cinnamon sugar and serve.