Up to 12 hours before you plan to make your Cheddar Parmesan Sourdough Waffles, feed your starter. It should be active and bubbly before you start making the waffles.
In a large bowl, combine 4 cups of active sourdough starter, 4 eggs, and 8 tablespoons of melted butter or melted coconut oil. Whisk thoroughly.
Next, add 2 teaspoons of salt, 1 tablespoon of garlic powder, 1 tablespoon of onion powder, 1 cup of shredded cheddar cheese, and 1 cup of shredded parmesan cheese.
Finally, add the 2 teaspoons of baking soda and whisk thoroughly. Let it sit for about 5 minutes until the waffle batter has risen and become light and airy.
While you are waiting for the batter to rise, plug in your waffle maker so that it can preheat.
Once the waffle iron is preheated, pour ½ cup of the batter into the iron. My waffle iron is smaller than others, so you may need to increase that to up to 1 full cup of batter into the iron. My waffle iron, being smaller, makes the waffle in about 3-4 minutes to my desired crispness. If your waffle iron is deeper and doesn’t have an automatic timer, it may need to cook for up to 7-8 minutes.
Reheat leftovers in the toaster to your desired level of doneness.