Sourdough Discard Apple Walnut Muffins
Tender, moist muffins made with sourdough discard, fresh diced apples, and toasted walnuts. Honey adds natural sweetness and a subtle caramel note. These muffins have a delicate crumb, a gentle tang from the sourdough, and a satisfying crunch of toasted nuts. Perfect for breakfast or afternoon snacking.
Steps
Before you start
- Preheat oven to 375°F (190°C)
- Toast 1 cup walnuts on a baking sheet for 6–7 minutes until fragrant; let cool slightly and coarsely chop
- Bring sourdough discard and eggs to room temperature (essential for a tender crumb)
Prepare Muffin Tin
- Line a 12-cup muffin tin with paper liners or lightly grease each cup with butter.
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Ready when: Muffin tin is lined and ready to fill
Tip: Paper liners help muffins bake evenly and make cleanup effortless.
Combine Dry Ingredients
- In a medium bowl, whisk together 1½ cups all-purpose flour, ½ cup whole wheat flour (or use all all-purpose flour), 1½ tsp baking powder, 1 tsp ground cinnamon, ½ tsp salt, and ¼ tsp nutmeg.
- Set aside.
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Ready when: Spices and leavening are evenly distributed throughout the dry mixture
Tip: Whisking dry ingredients helps prevent lumps of baking powder, which can cause dome cracks in muffins.
Mix Wet Ingredients
- In a large bowl, whisk together 1 cup sourdough discard (at room temperature), 4 tbsp melted unsalted butter, ⅓ cup honey, 2 large eggs, and 1 tsp vanilla extract until smooth and well combined.
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Ready when: Mixture is smooth with no streaks of honey, egg white, or butter visible
Tip: Room-temperature eggs blend more smoothly, creating a uniform batter and better muffin crumb.
Combine Wet and Dry
- Pour the dry ingredients into the wet ingredients and gently stir with a spatula until just combined.
- Don't overmix—small lumps in the batter are fine and desirable.
- Stop stirring as soon as you see no pockets of dry flour.
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Ready when: Flour is just incorporated with no large pockets of dry flour remaining
Tip: Overmixing develops gluten, which makes muffins tough and dense. A lumpy batter produces tender, crumbly muffins.
Add Apples and Walnuts
- Peel, core, and cut 2 medium apples into ¼-inch dice.
- Fold the diced apples and 1 cup coarsely chopped walnuts (toasted) into the batter until just incorporated.
- Divide the batter evenly among the 12 muffin cups, filling each about ¾ full.
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Ready when: Apples and walnuts are evenly distributed throughout the batter
Tip: Dice apples small so they cook through and distribute flavor evenly; tart varieties like Granny Smith provide nice contrast to the sweet honey.
Bake MuffinsOven 375°F / 190°C
- Bake at 375°F (190°C) for 22–25 minutes, until the tops are golden brown and a toothpick inserted into the center of a muffin comes out with just a few moist crumbs (crumbs of apple or walnut are okay).
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Ready when: Tops are golden brown; toothpick inserted in center comes out with just a few moist crumbs
Tip: Don't overbake. Sourdough discard keeps these muffins extra moist, so slightly underbaked is better than dry.
Cool Muffins
- Let the muffins cool in the pan for 5 minutes, then transfer them to a wire rack to cool further.
- Enjoy warm or at room temperature.
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Ready when: Muffins are warm to the touch or cooled to room temperature
Tip: Cooling in the pan for a few minutes helps muffins firm up so they don't break when unmolded.
Good to know
Tips
- Toast your own walnuts on a baking sheet for 6–7 minutes at 375°F while preheating your oven—this intensifies their flavor and prevents them from tasting stale or soggy.
- Sourdough discard brings subtle tang and keeps these muffins incredibly moist. Use discard that's at room temperature and recently fed (within 24 hours of feeding) for best results.
- Small lumps in the muffin batter are desirable. Overmixing is the enemy—it makes muffins tough. Mix only until you see no pockets of dry flour.
- You can prepare the dry and wet ingredients the night before in separate containers, then combine them and bake in the morning for fresh warm muffins.
Make ahead
Batter can be prepared up to 24 hours in advance and stored covered in the refrigerator before baking. Bake directly from cold—add 2–3 minutes to baking time.
Storage & reheating
Room temperature: 3 days in an airtight container. Refrigerator: 5 days in an airtight container. Freezer: 3 months wrapped individually in foil or in a freezer bag; thaw at room temperature or reheat in a 325°F (160°C) oven for 10–12 minutes until warmed through.
Substitutions
- active sourdough starter discard → Greek yogurt (plain, full-fat or non-fat). Use 1 cup (240 g) Greek yogurt in place of sourdough discard; adds tang and moisture but slightly less nutty flavor and rise.
- honey → maple syrup or agave nectar. Use ⅓ cup (80 ml) in place of honey; creates an equally delicious but distinctly different flavor profile.
- raw walnut halves → pecans or sliced almonds. Use 1 cup (100 g) in place of walnuts; pecans are slightly sweeter, almonds add a lighter texture.
- medium apples (such as Granny Smith or Honeycrisp) → pears, fresh blueberries, or fresh raspberries. Use 2 medium pears (400 g) or 1½ cups (180 g) berries in place of apples; changes both flavor and texture.
