Ingredients

  • 1/2 cup butter
  • 1 cup white sugar
  • 3 stalks rhubarb, cut into 1-inch pieces
  • 2 cups gluten-free flour blend
  • 2 teaspoons baking soda
  • 1/2 teaspoon salt
  • 1 cup yogurt
  • 1/2 cup coconut oil, melted
  • 1 egg
  • 1 teaspoon vanilla extract

Method

  • Preheat oven to 350 degrees F (175 degrees C).
  • Melt butter in a large cast iron skillet or Dutch oven over medium-low heat. Add sugar and rhubarb; cook until rhubarb is soft, 5 to 8 minutes. Remove from heat.
  • Mix gluten-free flour, baking soda, and salt together in a large bowl. Add yogurt, coconut oil, egg, and vanilla extract; stir thoroughly until batter is combined.
  • Drop cake batter over rhubarb mixture in the skillet. Spread it out gently until mostly smooth.
  • Bake in the preheated oven until top is golden and a toothpick inserted into the center comes out clean, about 25 minutes.
  • Run a knife around the edges, place a plate on top and carefully invert cake onto the plate.