Prepare bundt pan by greasing with shortening and dust with flour. Or use our cake release recipe.
Using a mixer, beat together cake mix, pudding mix, sugar, water, oil and eggs.
Add peanut butter and mix until combined.
With a spatula, stir in sour cream and mini chocolate chips.
Pour batter into prepared bundt pan and bake for 1 hour or until a toothpick inserted in the center comes out clean.
Allow the cake to cool for 20 minutes, then turn the cake onto a serving plate.
Make the glaze. In a medium bowl, whisk together powdered sugar, 3 tablespoons of milk, peanut butter and vanilla. Add another tablespoon or two of milk if needed to get the glaze to a drizzling consistency.
Drizzle glaze over top of the cake. Finish by sprinkling 1/4 cup mini chocolate chips over the glaze.
Store in an airtight container.
The calories shown are based on the cake being cut into 15 pieces, with 1 serving being 1 slice of cake. Since different brands of ingredients have different nutritional information, the calories shown are just an estimate. **We are not dietitians and recommend you seek a nutritionist for exact nutritional information.**