Preheat oven to 375F. Place graham crackers and pretzels in mixing bowl. Using the back of the measuring cup, smash and grind until ground up (see picture). You want most of it to be powdery, smash all large pieces. *You can also do this in a food processor.
Melt butter.
Add melted butter, cinnamon, and sugar to mixing bowl. Stir it all up until well-incorporated.
Take a small piece of butter and grease the ramekins. Add even amount of pie mixture to each ramekin. Press down with your fingers until crust is firmly packed. Place ramekins on a baking sheet.
Bake for 7-8 minutes. Let cool before adding pie filling. Mmmm, it smells SO good!