As much as I love the combination of chocolate and peanut butter and know that NOTHING could ever replace that classic Puppy Chow recipe, using speculoos (a.k.a biscoff spread) instead of peanut butter was a stroke of genius (and fat-assery).
Here's the basic Puppy Chow recipe as found on allrecipes.com
9 cups crispy rice cereal squares
1/2 cup peanut butter
1 cup semi-sweet chocolate chips
1 1/2 cups confectioners' sugar
In a saucepan over low heat, melt the chocolate; add peanut butter and mix until smooth.
Remove from heat, add cereal and stir until coated.
Pour powdered sugar into large plastic bag, add coated cereal and shake until well coated. Store in airtight container.
And of course, replace the peanut butter with speculoos (biscoff spread):
You may need to make a double batch. That's if you don't plan on sharing. Otherwise, make it a triple batch!