Combine all ingredients at once as original recipe calls for or follow my steps :

Bake for 30min in warm oven

Let cool down

If you are with me in just loving the whole peanut butter and chocolate thing, then stick with my slight change to the original recipe :

After having warmed up peanut butter, spread it evenly over top of cake

Let cool very well

Now prepare the chocolate glaze :

Bring sugar, margarine, milk, and cocoa to a boil stirring constantly

Reduce heat to a simmer for 2 min while stirring

Remove from heat and stir for another 5 minutes

Add vanilla, stir, and immediately pour onto cake

Glaze will dry quickly, so add any sprinkles now

Let glazed cake cool for an one hour