In a microwave safe bowl add the water and milk. Gently heat in the microwave for about 15 seconds to gently warm. Be careful to avoid overheating this mixture. Set aside for the dough.
1/3 (80g) cup whole milk, 1/2 (140g) cup water
In a shallow bowl, add the rolled oats and pour 2 Tablespoons of hot water over the oats and stir them with a spoon to hydrate the oats for the dough. Set this aside for the dough.
3/4 (65g) cup rolled oats, 2 (30g) Tbspns water
In a mixing bowl or stand mixer bowl add the sourdough starter, egg, avocado oil, the heated water and milk, molasses, honey, and vanilla extract. Whisk the wet ingredients until they're loosely combined, a few lumps are okay.
3/4 (200g) cup sourdough starter, 3 (60g) Tbsp molasses, 3 (65g) Tbsp honey, 1 large egg, 1/4 (57g) cup avocado oil, 1/2 tsp vanilla extract
Add the all-purpose flour, whole wheat flour, oats that have been soaked, cinnamon, and salt to the bowl.
3 1/4 (400g) cups all-purpose flour, 1/2 (75g) cup whole wheat flour, 1 1/4 (10g) tsp fine sea salt, 1/4 tsp cinnamon
Knead for ten minutes the dough should be slightly sticky and well mixed
To knead the dough using a stand mixer, knead the dough on low for ten minutes. If mixing by hand, knead for 2-3 minutes and the dough comes together into a smooth ball. This dough is high hydration so it’s important to work the gluten at this stage. Don't be worried if it feels sticky, I promise as it rests the flour will absorb the moisture.
Spray a straight edge container or bowl with cooking oil. Transfer the dough to the prepared bowl. Perform a few sets of stretch and folds to work the dough into a ball again.