Chocolate Peanut Butter Bundt Cake

INGREDIENTS

CAKE
1 standard size chocolate cake mix
1 package (3.9 oz. - 4 Serving Size) chocolate pudding - DRY MIX
1 cup sour cream
1 cup vegetable oil
4 eggs
1/2 cup warm water
1/2 cup peanut butter chips (optional)

PEANUT BUTTER FILLING
1 cup creamy peanut butter
1/3 cup powdered sugar
4 tablespoons butter, melted
1 teaspoon vanilla extract
1/8 teaspoon salt

GLAZE (you can make chocolate, peanut butter or both)
For Chocolate Glaze:
2/3 cup chopped chocolate (semi-sweet or milk chocolate work well)
1/3 cup heavy cream
For Peanut Butter Glaze:
2/3 cup peanut butter chips
1/3 cup heavy cream