This is the best sourdough brioche bun you’ll ever eat! Soft and fluffy on the inside and the perfect staple for hamburgers, sandwiches, or a brioche ice cream sandwich. My sourdough brioche bun recipe is made with simple ingredients like extra virgin olive oil, pastured eggs, and a touch of raw honey. No refined sugars or yeast! And the best part? They’re naturally fermented so they are gut healthy and nutritious.