Easy, easy, easy. As a variation, you can add candy coated chocolates, chocolate chips, or nuts.
VERY GOOD! I took the suggestion of adding an extra 1/2 cup of cereal, and the consistency was perfect...not too sticky and gooey. The vanilla really adds to the flavor, and using real butter is highly recommended. I do suggest either making a double batch for the 9X13 pan, or using a 9X9 or 8X8 for the original amount; I like thicker bars. Thanks Karen. - 18 Aug 2005 (Review from Allrecipes US | Canada)
The recipe was pretty good following the original recipe. I thought that it had a bit of a gritty/powdery taste to it. With the second batch I increased the cereal to 6 cups and added a tablespoon of the vanilla,and a teaspoon of corn syrup. They were so much better. Everyone loved them. - 24 Feb 2006 (Review from Allrecipes US | Canada)
RICE CRISPIE BARS = GOOEY OR WHY MAKE THEM!?? Great recipe - vanilla is a nice touch. I always melt my butter in the microwave and then mix in the marshmellows.... microwave another 15 seconds then mix in the cripies. Easier than than the pan. I like them thick also, so I make them in a 7 x 11 brownie pan. - 10 Oct 2005 (Review from Allrecipes US | Canada)