Next, line the round pans with wax paper. This will allow you to easily remove the Rice Krispie cakes once they are pressed into the pan.
In another mixing bowl, pour in one bag of large marshmallows. Slice 2 Tbsp. of butter into smaller chunks and add to bowl.
Microwave the marshmallows and butter for 2 minutes.
Remove bowl from the microwave and stir the marshmallows and butter together.
Microwave the mixture for an additional minute. Again, remove the bowl from the microwave and stir.
Once you have stirred the marshmallow and butter mixture so that there are no lumps, add 6 cups of Rice Krispies.
Stir in the Rice Krispies so that they are evenly coated with the marshmallow and butter mixture.
Once stirred, press the mixture into the round pans. Helpful hint: spread Crisco or butter on your hands to prevent the Rice Krispie mixture from sticking to your hands.
You will need to make 4 batches of Rice Krispies to fill 2 - 6" round pans and 2 - 10" round pans.
For the bottom side of each cake layer, form a ridge around the edge of the pan by pressing down with your fingers. If you want to fill the center of each layer with chocolate, this will prevent the chocolate from leaking out the sides of the cake.
Allow the Rice Krispies to cool for 5-10 minutes. Then remove the Rice Krispie cake by pulling on the edges of the wax paper. Peel the wax paper off the cake.
I filled each of the cake layers with chocolate. To do this, you will need either Candy Melts, as shown above, or a bag of chocolate chips. Place the candy melts into a microwave safe container. Microwave for 30 seconds, remove, and stir. Repeat until the chocolate is fully melted.
Once the chocolate is melted, pour it onto one cake from each of the layers. Spread evenly with a spatula.
After the chocolate has been spread on the bottom half of each cake layer, place the second half on top.
To decorate this cake I used green and pink chocolate wafers. You can either use colored chocolate or frosting to decorate. If you choose to use chocolate to decorate, melt in the microwave as previously mentioned. Put the chocolate in a sandwich bag and snip the corner with a scissors.
Apply pressure to the bag with the melted chocolate and zig-zag back and forth across the cake. Do this on both layers of the cake. I used green chocolate on the bottom layer of my cake and pink chocolate on the top.
Lastly, place the top layer of the cake onto the bottom. If using chocolate to decorate this will help the top layer stick to the bottom. If using frosting to decorate, spread frosting on the bottom side of the top layer so that it will adhere to the bottom layer. Now you have a Rice Krispie cake! Have fun with this and try different variations by using assorted types of Rice Krispies, fillings (chocolate, caramel, marshmallow), and decorations!