Sourdough Discard Apple Cinnamon Muffins (Streusel Crumb)

When autumn baking season arrives (or anytime you crave warm cinnamon spice), these sourdough discard apple cinnamon muffins are the ultimate morning treat. Featuring bakery-style high-domed muffin tops, tender spiced Honeycrisp apple pieces in every bite, and a buttery brown sugar streusel that shatters with every bite, these muffins vanish from the cooling rack fast.

The sourdough discard pairs seamlessly with warm fall spices, adding a subtle tang that balances the sweet apples and buttery cinnamon crumb.

Secrets to Bakery-Style Tall Muffin Domes

• The High-Heat Oven Blast: Start baking the muffins at 425°F (220°C) for the first 5 minutes, then drop the temperature to 350°F (175°C) without opening the oven door. This sudden burst of high heat causes the leavening agents to expand rapidly, shooting the batter upwards into tall, dramatic bakery domes.
• Thick Batter: Quick bread batters should be thick and spoonable, not runny. The sourdough discard adds viscosity without extra liquid.
• Generous Streusel: A buttery cinnamon streusel not only adds irresistible crunch but also holds moisture in the muffin top as it bakes.

Ingredients (Grams & Cups)

• Sourdough Discard (120g / 1/2 cup): 100% hydration, unfed.
• All-Purpose Flour (240g / 2 cups): Spooned and leveled.
• Baking Powder (1 1/2 tsp) & Baking Soda (1/2 tsp).
• Ground Cinnamon (1 1/2 tsp) & Ground Nutmeg (1/4 tsp).
• Fine Sea Salt (1/2 tsp).
• Melted Butter or Vegetable Oil (80g / 1/3 cup).
• Brown Sugar (100g / 1/2 cup) & Granulated Sugar (50g / 1/4 cup).
• Large Eggs (2 room temperature) & Vanilla Extract (1 tsp).
• Sour Cream or Greek Yogurt (60g / 1/4 cup): Guarantees a tender crumb.
• Apples (200g / approx. 1 1/2 cups peeled and finely diced): Honeycrisp, Granny Smith, or Pink Lady.
• Streusel Topping: 4 tbsp flour + 4 tbsp brown sugar + 1/2 tsp cinnamon + 3 tbsp melted butter.

Step-by-Step Muffin Method

1. Prepare Pan & Streusel: Preheat oven to 425°F (220°C). Line a standard 12-cup muffin tin with paper liners. In a small bowl, fork together the streusel ingredients until crumbly.
2. Whisk Wet: In a large mixing bowl, whisk melted butter, brown sugar, white sugar, eggs, sour cream, vanilla, and sourdough discard until smooth and well blended.
3. Fold Dry & Apples: Add flour, baking powder, baking soda, cinnamon, nutmeg, and salt. Fold with a spatula just until 90% combined, then gently fold in the diced apples. Do not overmix!
4. Fill & Top: Divide batter evenly among the 12 muffin cups, filling them almost to the brim. Pile the cinnamon streusel generously on top of each muffin, pressing down very lightly so it adheres.
5. The Two-Temperature Bake: Bake at 425°F (220°C) for 5 minutes. Then, without opening the oven door, lower the temperature to 350°F (175°C) and continue baking for 15 to 18 minutes, or until a toothpick inserted into the center comes out clean.
6. Cool: Cool in the pan for 5 minutes, then transfer to a wire rack. Serve warm!

More Sourdough Discard Bakery Recipes

Complete your discard baking repertoire with our baker-style discard blueberry muffins, our ultra-moist banana bread, and our chewy discard chocolate chip cookies.