Step 1: Prepare the Graham Crackers
Break each graham cracker sheet in half along the perforated lines, creating square pieces. Line a baking sheet with parchment paper or a silicone mat. Arrange the graham cracker squares in a single layer on the prepared baking sheet. This will make it easier to coat them later.
Step 2: Make the Peanut Butter Filling
In a large mixing bowl, combine the creamy peanut butter, softened butter, powdered sugar, and vanilla extract. Use an electric mixer or a sturdy spoon to mix the ingredients together until smooth and creamy. Be sure to scrape the sides of the bowl to ensure that everything is evenly incorporated. The mixture should be thick and hold its shape.
Step 3: Shape the Peanut Butter Balls
Roll the peanut butter mixture into 1-inch sized balls. This is easier if you use a small cookie scoop or measuring spoon to portion out the filling. Place one peanut butter ball onto each graham cracker square, pressing down slightly to adhere.
Step 4: Flatten the Peanut Butter Filling
Carefully flatten the peanut butter balls onto the surface of each graham cracker, spreading the filling all the way to the edges. Use your fingers or the back of a spoon to create a smooth, even layer. Ensure the peanut butter completely covers the graham cracker for the best flavor and texture.
Step 5: Melt the Chocolate Coating
In a microwave-safe bowl, combine the semi-sweet chocolate chips and 3 tablespoons of vegetable oil. Microwave in 30-second intervals, stirring in between, until the chocolate is completely melted and smooth. Be careful not to overheat the chocolate, as it can burn easily. If the chocolate is still not completely melted after a few intervals, continue microwaving in shorter bursts (15 seconds) and stirring until smooth.
Step 6: Coat the Graham Crackers in Chocolate
Dip each peanut butter-topped graham cracker into the melted chocolate, ensuring it is fully coated. Lift the graham cracker out of the chocolate and gently shake off any excess. Use a fork or dipping tool to transfer the chocolate-covered graham cracker back to the prepared baking sheet.
Step 7: Melt the Peanut Butter Chip Drizzle
Once all the graham crackers are coated in chocolate, combine the peanut butter chips and the remaining 1 tablespoon of vegetable oil in another microwave-safe bowl. Microwave in 30-second intervals, stirring in between, until the peanut butter chips are melted and smooth.
Step 8: Drizzle with Peanut Butter
Drizzle the melted peanut butter chips over each chocolate-coated graham cracker. Use a spoon or a piping bag to create a decorative pattern.
Step 9: Chill to Set
Transfer the baking sheet to the refrigerator and chill for at least 30 minutes, or until the chocolate and peanut butter drizzle are completely set. This will help the graham crackers hold their shape and prevent the chocolate from melting when you handle them.