Crockpot Peanut Butter Fudge Cake

1 Box of Yellow Cake Mix, I Used Betty Crocker.

1 Cup of Water.

3 Eggs.

1/2 Cup of Creamy Peanut Butter.

1/3 Cup of Unsalted Butter, Softened.

1/2 Cup of Chocolate Syrup.

3 Tablespoons of Creamy Peanut Butter.

3 Tablespoons of Milk.

1 Cup of Powdered Sugar.

2 Tablespoons of Chocolate Syrup.

10-12 Miniature Reese's Peanut Butter Cups, Halved.