1medium sweet potato, cooked and mashed(~1 packed cup)
1/4cupunsalted butter,softened
1/2cupsourdough discard
1tspvanilla extract
1tspbaking soda
2cupsfresh blueberries(optional)*
Instructions
Unless you’re skipping the overnight fermentation, make the dough the day before you want to eat the muffins.
In one bowl, combine flour, salt, and sugar.
In another bowl, mix mashed sweet potato, egg, butter, sourdough discard, and vanilla. Ensure the sweet potato and butter are not too hot — if they are, they can damage or kill the beneficial microbes in the sourdough discard needed for fermentation.
Stir wet ingredients into dry until just combined.
Cover and refrigerate overnight (≈ 12 hours) for gentle fermentation.
The next morning, sprinkle in baking soda and mix until evenly incorporated.
Fold in blueberries (or other add-ins like nuts or chocolate chips).
Preheat oven to 350°F (175°C).
Divide batter into a greased or lined muffin tin.
Bake 35 minutes, or until golden brown and a toothpick comes out clean or with a few moist crumbs.
Video
Notes
-I often use einkorn whole wheat for increased digestibility and nutrient density.-*I usually use cane or coconut sugar, or allulose for a lower-glycemic option. If using allulose, increase to 1 cup (instead of ¾ cup) since it’s less sweet.-*Feel free to make your muffins with other add-ins like chocolate chips or nuts.-Why overnight? Fermentation softens gluten, reduces antinutrients, lowers glycemic impact, and improves texture.