In a large mixing bowl, whisk together the egg, egg yolk, Greek yogurt, sourdough discard, white sugar, brown sugar, vanilla, pumpkin purée, and oil until smooth.
1 large egg, 1 egg yolk, 2 (30g) tbsp plain full-fat Greek yogurt, ⅓ (80g) cup sourdough discard, 1 tsp vanilla extract, ¾ (180g) cup pumpkin purée, ⅓ (75g) cup avocado , ½ (100g) cup white sugar, ¼ (50g) cup brown sugar
Sourdough Discard Swap: If you want to skip the discard, add the additional flour and milk to the batter here.
1/4 (30g) cup all-purpose flour, 1/4 (60g) cup whole milk
In a medium bowl, whisk together flour, cinnamon, ginger, nutmeg, cardamom, baking soda, baking powder, and salt.
1¾ (220g) cups all-purpose flour, 2 tsp ground cinnamon, ½ tsp ground ginger, ½ tsp ground nutmeg, ⅛ tsp ground cardamom, 1 tsp baking soda, 1½ tsp baking powder, ¾ tsp fine sea salt
Add dry ingredients to wet. Beat wet ingredients with a whisk or a hand mixer until no streaks remain. Do not overmix.
Overnight Fermentation: Cover tightly with plastic wrap and refrigerate for 8–12 hours for added fermentation benefits. If baking same day, skip this step.