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Gluten free rhubarb crumble freshly baked and out of the oven

Garden Fresh Rhubarb Crumble (Gluten Free!)

I’ve been making this gluten free rhubarb crumble for YEARS and it’s a classic in our home. Not only is it gluten free, but it’s a reduced-sugar recipe that you can feel good about using over and over.
4.78 from 9 votes
Prep Time 30 mins
Cook Time 35 mins
Total Time 1 hr 5 mins
Course Breakfast, Dessert, Snack
Cuisine American
Servings 9 servings
Calories 167 kcal


  • 1 8"x8" Baking Dish Glass or Porcelain
  • 1 Pastry Blender
  • 1 Mixing Bowl
  • 1 Mixing Spoon
  • Set of Measuring Cups
  • 1 Set of Measuring Spoons
  • 1 Sharp Knife


  • 5 cups Fresh or frozen rhubarb (if frozen, thaw first and do not drain), chopped Typically 12-15 stalks
  • cup Sugar I like organic cane sugar
  • 3 tbsp Gluten free flour Wheat flour is ok, too, if you wish!
  • ½ cup Gluten free oats Thick-cut or sprouted
  • ¼ cup Brown sugar
  • ¼ cup Gluten free flour Wheat flour is ok, too, if you wish!
  • ¼ tsp Nutmeg or cinnamon
  • ¼ cup Organic, grass-fed butter Chilled and thinly sliced
  • ¼ cup Nuts, chopped Pecans or walnuts are my favorite


  • Preheat oven to 375 degrees
  • Chop rhubarb into 1/2-1" pieces, then add to 8"x8" baking dish
  • Mix in 1/3 cup of sugar and 3 Tbsp gluten free flour, set aside
  • In mixing bowl, combine oats, brown sugar, 1/4 cup of gluten free flour and nutmeg/cinnamon
  • Add slices of chilled butter to mixing bowl. Cut into the dry ingredients using a pastry blender or a fork until the mixture becomes crumbly.
  • Stir in the chopped nuts (if desired), then sprinkle the crumb topping over the rhubarb.
  • Bake for 35-40 minutes or until the topping is golden brown. Sometimes I like to broil the rhubarb crumble for a minute or two at the end to caramelize everything.
  • Let cool slightly before serving. If you're looking for a healthier alternative to ice cream to serve it with, try plain greek yogurt! It's a great combo and an excellent way to add some protein to your dessert.


Calories: 167kcal
Keyword garden, GF, Gluten-Free, grass-fed butter, harvest, low-sugar, oats, reduced-sugar, rhubarb, whole grain
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