Step 1: Make the Crust

1. Process the Graham Crackers: Begin by placing the graham crackers in a food processor. Pulse them until you get fine crumbs.
2. Add Sugar and Butter: Once the crackers are crumbs, add in the granulated sugar and melted butter. Pulse the mixture again until the crumbs resemble wet sand.
3. Press the Crust: Dump the graham cracker crumb mixture into a 9-inch pie plate. Firmly press it into the bottom and up the sides of the pie plate to form an even crust.
4. Chill the Crust: Place the crust in the refrigerator for 10 to 15 minutes to set while you prepare the cheesecake filling.

Step 2: Prepare the Cheesecake Filling

1. Cream the Ingredients: In a large bowl, add the room temperature cream cheese and powdered sugar. Using a hand mixer, beat on medium speed until the ingredients are well combined.
2. Add Remaining Ingredients: To the cream cheese mixture, add the sour cream, creamy peanut butter, and vanilla extract. Beat until everything is smooth and creamy.
3. Fold in Chocolate and M&Ms: Stir in ½ cup of the M&Ms and ¾ cup of the mini chocolate chips. Ensure they are evenly distributed throughout the batter.

Step 3: Assemble the Cheesecake

1. Fill the Crust: Scrape the prepared cheesecake filling into the graham cracker crust. Spread the filling evenly over the crust, smoothing the top with a spatula.
2. Chill the Cheesecake: Cover the cheesecake with plastic wrap and place it in the refrigerator to chill overnight. This will allow the cheesecake to set properly, giving it the perfect texture.

Step 4: Decorate the Cheesecake

1. Prepare the Fudge Topping: Once the cheesecake has chilled overnight, place the chilled fudge topping in a sandwich bag. Cut a small hole in one corner of the bag to create a makeshift piping bag.
2. Drizzle the Fudge: Drizzle the fudge over the top of the cheesecake in any design you prefer.
3. Add Final Toppings: Sprinkle the remaining ¼ cup of M&Ms and ¼ cup of mini chocolate chips on top for an extra burst of color and flavor.