Step 1: Prepare your workspace by lining a baking sheet with parchment paper. Lay out half of your Ritz crackers (about 30-35 crackers) on the prepared baking sheet, flat side up.
Step 2: In a medium bowl, combine the creamy peanut butter, softened unsalted butter, powdered sugar, and vanilla extract. Mix with an electric mixer or by hand until smooth and well combined. This is your cookie filling.
Step 3: Take a small amount of the peanut butter mixture (about 1-2 teaspoons) and spread it onto one of the Ritz crackers. Top with another Ritz cracker to create a sandwich.
Step 4: Repeat the process until all of the crackers have been used to form peanut butter sandwiches. Place the assembled sandwiches back on the parchment-lined baking sheet.
Step 5: Place the baking sheet with the cracker sandwiches into the freezer for 10-15 minutes. This helps the filling set, making them easier to dip.
Step 6: While the crackers are chilling, melt your chocolate. In a microwave-safe bowl, combine the melting chocolate (or chocolate chips) and vegetable shortening/coconut oil (if using). Microwave in 30-second intervals, stirring well after each, until the chocolate is smooth and fully melted. Alternatively, melt over a double boiler.
Step 7: Remove the chilled cracker sandwiches from the freezer. Using a fork or a dipping tool, dip each cracker sandwich into the melted chocolate, ensuring it's fully coated. Gently tap off any excess chocolate.
Step 8: Immediately place the chocolate-coated cookie back on the parchment-lined baking sheet. Generously sprinkle with festive Christmas sprinkles before the chocolate sets.
Step 9: Repeat with the remaining cookies. Once all cookies are dipped and sprinkled, place the baking sheet back into the refrigerator for at least 15-20 minutes, or until the chocolate has fully set.