These Sourdough Pumpkin Waffles are crispy on the outside, airy in the middle, made with pumpkin puree, sourdough, and cinnamon for the perfect fall or winter breakfast.
In a large bowl, combine the whole milk and vinegar. Let it sit for 10 minutes to allow the vinegar to curdle the milk. This creates a thicker, buttermilk-like ingredient. You will not taste the vinegar.
Add the sourdough discard, melted and cooled butter, and pumpkin puree.
In a separate bowl, whisk the flour, sugar, baking soda, salt, and cinnamon. Add the dry ingredients to the wet ingredients and combine.
Preheat the waffle iron. Pour the batter into the waffle iron and cook until crispy, but not burned. For my waffle iron, this means that I set the temperature to the highest setting and I leave the waffle in longer than the waffle iron indicates. Adjust based on your waffle iron and its settings.
Using tongs and a fork, remove the waffle and place it on a cookie drying rack. This creates air circulation under the waffles, which helps the waffles to stay crispy.
Notes
Don't Rely on the Waffle Iron Indicator: The waffles may need more time than the waffle iron indicates. For crispy waffles, leave the waffles in the iron until they are a deep golden brown and crispy.
Use a Cooling Rack: Transfer the waffles straight from the waffle iron to a wire cooling rack (or cookie drying rack). This helps to ensure air circulation under the waffles, which prevents the underside of the waffles from steaming and becoming soft.
Extra Crispy Waffles: For extra crispy waffles, bake the waffles in the oven at 300°F for 3 minutes max, or transfer them back to the waffle iron for a minute or two to crisp up.
Spreadable Butter: For easy spreadable butter, microwave your butter at 20% power for 30 seconds (and more as needed) to soften it before spreading it on the waffles.