Hi - I don't even use a recipe for these, they're so easy. Just take one regular size package of marshmallows and melt in a double boiler with 2 T of canola (or safflower, sunflower, soybean) oil. Stir as you're melting. Or, you can put the marshmallows and oil in a BIG bowl and microwave for 30 seconds, stir, and repeat until everything is smoothly melted. Then stir in as much cereal as you can until the texture is dry but everything is still sticking together. Pat the mixture into a baking dish you've lightly sprayed with oil. It helps to wet your hands with cold water before you pat - less stuff will stick to them.
Also - you can stir in a couple tablespoons (just keep adding to taste) unsweetened cocoa powder to the marshmallow mix as it's melting for a chocolate version without added fat.