Chocolate Crumb Crust

• 1 1/4 cup (115 grams) chocolate cookie crumbs (from about 18 cookies each 3 in/7.5 cm in diameter)
• 6 tablespoon (85 grams) unsalted butter, melted

1. In a bowl, combine the crumbs and butter and stir until the mixture is evenly moist.
2. To line jars with the crust, spoon about 4 tablespoons of the crumb mixture into each jar. Take the jar in your nondominant hand (left hand if you are right-handed, for example) and start pressing the crumb mixture evenly into the bottom of the jar with your other hand. Now work some of the crumb mixture along the sides of the jar, pressing firmly. The crust should be about ¼-inches (6 mm) thick and cover ¾ of the jar.
3. Fill the crusts immediately.