Low-FODMAP Peanut Butter Buttercream Frosting; Gluten-free, Vegan

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One of the best frosting recipes- low-FODMAP Peanut Butter Buttercream.  Perfect for any low-FODMAP cake or my low-FODMAP Chocolate Brownies.  It is rich, creamy, smooth and so delicious.

I used my low-FODMAP Happy Baking Fudgy Brownie Mix to make these amazing brownies.  It was super easy and they taste sensational!  Low-FODMAP certified means peace of mind too.

Chocolate and peanut flavors together remind me of one of my favorite Happy Bar flavors, low-FODMAP Peanut Chocolate Euphoria.  I have one of those every day as my mid-afternoon snack 🙂

I also love my low-FODMAP Peanut Butter Buttercream as a dip for dark chocolate squares (tastes just like a peanut butter cup) or as middle layer for a low-FODMAP Whoopie Pie.

Try this low-FODMAP Peanut Butter Buttercream with my low-FODMAP Banana Cake.  So good.

You may also love my low-FODMAP Chocolate Buttercream, low-FODMAP Cream Cheese Frosting and low-FODMAP Salted Caramel Buttercream recipes.  Or check out over 300 more low-FODMAP recipes on the blog. IBS-friendly!

Be healthy and happy,

Rachel Pauls, MD

Low-FODMAP Peanut Butter Buttercream Frosting; Gluten-free, Vegan

Although this recipe has not been tested, a single serving should be low-FODMAP based on the ingredients

Serves enough for a 2 layer cake (24 serves)

Prep time: 10 min


  • 1 cup low-FODMAP Vegan Spread, such as Earth Balance
    • Can also use butter for non-vegan version
  • 1 heaped cup natural peanut butter (I prefer salted, add a pinch of salt to frosting if you use unsalted)
  • 4 cups confectioner’s or powdered sugar (vegan certified, if necessary)
  • 2 tsp vanilla extract
  • 1-2 tablespoons low-FODMAP milk (such as almond milk, or canned coconut cream, lactose-free milk for non-vegans)


  • Mix the low-FODMAP spread and peanut butter together until fully combined in bowl of electric mixer
  • Add the sugar slowly, then vanilla
    • Careful as it can be quite messy 😉
  • As needed add low-FODMAP milk or cream until desired consistency is reached
    • If you plan to pipe your frosting you will want it thicker than if you plan to spread it

  • These taste sensational!

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As an IBS-sufferer myself, I know how badly you want to feel healthy and happy. I’ve spent over a decade researching IBS and FODMAPs, and my recipes and guidance will help you succeed.

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