1: Crack your eggs and whisk together with your milk. Add in your sourdough start, discard or active work fine either way, and salt, then whisk together.
2: Whisk in your flour until all large clumps disappear. Shouldn’t be beaten into a perfect consistency.
3: Pour into a container that will allow you to easily pour into your muffin pan.
4: Preheat oven to 450°F with muffin pan in the oven. Once preheated, remove the muffin pan and spray with nonstick spray. Pour in your popover batter until nearly full.
5: Whisk your butter ingredients together until smooth. Set aside.
6: Place into oven and bake for 15 minutes. Lower heat to 375°F and bake for an additional 15 minutes. Remove and allow to cool, then remove popovers and let cool on a rack or enjoy immediately with your delicious cinnamon butter.