Betty Crocker® Rich & Creamy cream cheese frosting can be substituted for the chocolate frosting.
Using an ice cream scoop is an easy way to fill muffin cups. Use one that measures out slightly less than 1/4 cup batter.
If you don't want to chop peanuts, look for a chopped nuts mix in the baking section of the supermarket. The package size is usually 1/2 cup and contains a mix of nuts including peanuts.
If you have only one pan and a recipe calls for more cupcakes than your pan will make, cover and refrigerate the rest of the batter while baking the first batch. Cool the pan about 15 minutes, then bake the rest of the batter, adding 1 to 2 minutes to the bake time.