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A plate of strawberry rhubarb filled donuts
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5 from 1 vote

Strawberry Rhubarb Donuts

Fluffy, cinnamon-sugar coated donuts injected with sweet and tangy strawberry-rhubarb filling.  
Prep Time10 minutes
Cook Time30 minutes
Total Time1 hour
Course: Breakfast, Dessert
Cuisine: American
Keyword: easy donuts, rhubarb dessert, rhubarb donuts, strawberry donuts, strawberry rhubarb donuts
Servings: 10

Ingredients

Donuts

  • 5 cups canola oil for frying
  • 1 tube Pillsbury Country Biscuits
  • ¼ cup granulated sugar
  • 1 to 2 teaspoon ground cinnamon to taste
  • strawberry-rhubarb filling cooled

Strawberry-Rhubarb Filling

  • ½ cup sliced rhubarb fresh or thawed from frozen
  • ½ cup sliced strawberries fresh or frozen
  • ¼ cup granulated sugar or to taste
  • 2 tablespoon lemon juice
  • 1 ½ teaspoon corn starch

Instructions

Donuts

  • Fill a medium-large pot with the oil (a Dutch oven works great!). The oil should rise at least 2 ½ inches high within the pot and easily accommodate three biscuits at a time.  Heat the oil to 375°F (yes, a thermometer is a must!).
  • Meanwhile, line a cooling rack with paper towels.  Toss the cinnamon and sugar together in a bowl and set aside.
  • Once the oil reaches the correct temperature, use metal tongs or a slotted spoon to carefully place two the three biscuits into the pot.  Fry the biscuits for 2-3 minutes on each side.  Once done, carefully remove the donuts with a slotted spoon (allowing excess oil to drip back into the pot) and let drain on the paper towels.
  • Be sure to check and adjust the temperature of the oil as you go.  It should always be between 360 to 375°F.
  • After the donuts have cooled and drained slightly, toss them in the cinnamon-sugar mixture.  Set aside and continue with the remaining biscuits.
  • Once all of the donuts have been made, it is time to fill them.  Use a chopstick or wooden dowel to slightly hollow out the center of each donut.  Do not poke the chopstick out the other side.
  • Fill a piping bag fitted with a bismarck tip  or round piping tip with the cooled strawberry-rhubarb filling.  Place the tip in the end of each donut and gently fill the centers.  Do not over-fill.

Strawberry-Rhubarb Filling

  • Place the rhubarb and strawberries in a saucepan over medium heat.  Add the sugar and cook until the fruit begins to break down and juices begin to simmer, about 5 to 10 minutes. 
  • Meanwhile, dissolve the cornstarch in the lemon juice.  Stir the lemon juice mixture into the rhubarb and cook for a few minutes.  Remove the mixture from the stove and blend with an immersion blender until smooth.  Cover with plastic wrap and chill in the refrigerator until thickened.