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+ servings
Muffins on tray with pink flowers

Easy Sourdough Rhubarb Muffins | A Discard Recipe

Leisha Lockrem
Tart rhubarb bites folded into a light and tender sourdough batter, made with buttermilk and discard for the perfect sourdough muffins. 
5 from 1 vote
Prep Time 20 minutes
Cook Time 18 minutes
Total Time 38 minutes
Course Breakfast, Snack
Cuisine American
Servings 18 muffins
Calories 139 kcal

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Equipment

  • muffin pan
  • mixing bowl
  • spoon
  • kitchen scale optional
  • muffin liners optional
  • Cutting Board
  • sharp knife

Ingredients
  

Wet Ingredients

  • 125 g sourdough discard ½ cup
  • 100 g neutral oil ½ cup
  • 300 g sugar 1½ cups
  • 42 g unsalted butter 3 tbsp
  • 2 large eggs
  • 1 ½ tsp vanilla extract
  • 190 g rhubarb 1½ cups
  • 125 g buttermilk ½ cup
  • 3 tbsp turbinado sugar

Dry Ingredients

  • 210 g all purpose flour 1¾ cups
  • ½ tsp salt
  • 1 ½ tsp baking powder

Instructions
 

Prep

  • Preheat the oven to 425°F/218°C.
  • Grease or line a standard muffin tin with muffin liners.
  • Wash the rhubarb stalks. Trim the ends and leaves and discard. Cut the rhubarb into 1/2 inch pieces. if the stalk is thin, you can chop the stalk as-is! If the stalk is thick, cut the stalk in half lengthwise before cutting the pieces.
  • Melt the butter.

Mix Batter

  • Add 125 g (½ cup) sourdough starter discard, 100 g (½ cup) oil, 42 g (3 tbsp) melted butter, 300 g (1½ cups) sugar, 2 eggs, and 1½ tsp vanilla extract to a medium bowl. Mix with a handheld mixer until fully combined.
  • In a separate bowl, add 210 g (1¾ cups) all-purpose flour, 1½ tsp baking powder, and ½ tsp salt. Whisk until the baking powder and salt are evenly distributed in the flour.
  • Alternatively, add the flour mixture and 125 g (½ cup) buttermilk to the wet ingredients, starting and ending with the flour mixture.
    Why alternate adding the flour mixture with the milk? It all has to do with the fat. The oil, butter, and sugar mixture won’t absorb much liquid. If you begin with the milk, or worse, even add it all, the butter becomes saturated and separates, keeping the liquid on top. Once you add the dry ingredients, they absorb all of the liquid, creating a heavy cake instead of a light and airy cake.
  • Fold in 130 g (1½ cups) cut rhubarb pieces.

Bake

  • Fill each muffin cup with muffin batter until ¾ full. Sprinkle the tops with 3 tbsp turbinado sugar.
  • Place the muffins in the oven and bake for 5 minutes. Reduce the temperature to 400°F/204°C and bake for an additional 13-15 minutes.
  • The muffins are done when the top springs back when lightly pressed, and a toothpick inserted into the middle of the rhubarb muffin comes out with just a few moist crumbs.
  • Place the muffins on a wire rack to cool.

Notes

How to Store Rhubarb Muffins

Like all baked goods, these sourdough rhubarb muffins are best the day they're baked. Allow the muffins to cool completely before placing in an airtight container. Store at room temperature for up to 5 days. The sugar topping will soften the longer the muffins are stored. 
 

Can Rhubarb Muffins be Frozen?

Sourdough rhubarb muffins are great frozen. I like to bake a double batch. One to enjoy now, and the other to stash in the freezer for another day! Allow the rhubarb muffins to cool completely and place them into a freezer bag. Remove as much air as possible, label with the date and name, and move to the freezer. 
Note that the sugar topping will weep as it thaws, so it's best to bake without the sugar topping if you know you're going to freeze the muffins. 
 

How Do I Prepare Rhubarb for Baking?

Wash any dirt off of the rhubarb stalks. Trim the root end and the large leaf and discard. Similar to celery, rhubarb is stringy and can be challenging to make clean cuts. Use a sharp knife and a wooden cutting board and cut the rhubarb stalks into whatever size your recipe calls for. 
 
Nutrition information is automatically calculated, so should only be used as an approximation.

Nutrition

Calories: 139kcalCarbohydrates: 28.5gProtein: 1.5gFat: 2.3gSaturated Fat: 1.4gPolyunsaturated Fat: 0.1gMonounsaturated Fat: 0.6gTrans Fat: 0.1gCholesterol: 5.8mgSodium: 108.4mgPotassium: 54.3mgFiber: 0.5gSugar: 19.1gVitamin A: 80.5IUVitamin C: 0.8mgCalcium: 39.4mgIron: 0.6mg
Keyword sourdough breakfast, sourdough dessert
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