If you're looking for a vegan peanut butter frosting recipe (or icing recipe, as some people prefer to call it) that the kids will love but one that won't ruin their teeth and make them bounce off the walls, try this refined sugar-free peanut butter cake frosting recipe. It's made from nothing more than peanut butter, maple syrup and flour, although one recipe tester suggested thinning it out with a bit of soy milk. Up to you And yes, maple syrup does contain plenty of natural sugar, but for vegans looking to avoid any kind of refined sugar, this recipe is perfect. This peanut butter frosting or icing recipe is both vegetarian and vegan and goes great with a vegan chocolate cake or even a vegan chocolate peanut butter cake. Or, might we suggest you try using this vegan peanut butter frosting to top off these low-calorie and fat-free and reduced sugar chocolate brownies? YumThis peanut butter icing recipe is perfect for a vegan birthday cake for the kids or for topping off homemade vegan cupcakes. Or, you might want to also try this sugar-free chocolate frosting recipe. One person who tested out this peanut butter frosting found it to be a bit too thick, so she added a bit of soymilk to thin it out which worked quite well, so you can always try that to thin out the consistency a bit if you need.