The Cooking Nurse.
Since she mentioned there wasn't much of a cake batter taste, I doubled her amount (included below) but might even add more the next time. Just eyeball it and make sure the marshmellow is still gooey enough to coat the rice crispy cereal when you pour it in.
You can use any kind of sprinkles you want - even changing it with the seasons. I happened to have these in my pantry so I used them. They added a distinct crunch that we really liked! And they're fun! And colorful! My dad thought they tasted just like a "crunchy birthday cake" and they got rave reviews from a few others that tried them after I posted this entry. Try them and let me know what you think!
Cake Batter Rice Crispy Treats
3 tablespoons butter
1 (10 oz) bag of mini marshmallows
1/2 cup yellow cake mix (or more)
6 cups Rice Krispies cereal
Sprinkles (just eyeball it)
Melt butter in a large saucepan over low heat. Add marshmallows and stir until they begin to melt. Add one spoonful of dry cake mix to marshmallows at a time, until all is incorporated. After the marshmallow mixture is completely melted, add Rice Krispies. Stir until cereal is completely coated with marshmallow mixture. Sprinkle in sprinkles and mix well. Press into a greased 9×13 in pan, and top with more sprinkles. Let sit for about 30 minutes before cutting.