Overnight Sourdough Waffles: Long Fermented
Wake up to golden, crispy sourdough waffles with zero morning effort! This one-bowl overnight recipe creates perfectly tangy, fluffy waffles with crispy edges. Mix everything the night before, refrigerate, and simply cook in the morning for bakery-quality breakfast.
Calories: 280kcal
Equipment
- Large mixing bowl
- Whisk
- Wooden spoon or spatula
- Belgian waffle iron
- Measuring cups and spoons
- Kitchen scale (recommended for accuracy)
Ingredients
Wet Ingredients:
- 480 g whole milk 2 cups
- 240 g active sourdough starter, 100% hydration 1 cup
- 100 g 2 large eggs room temperature
- 42 g pure maple syrup 2 tablespoons
- 4 g vanilla extract 1 teaspoon
Dry Ingredients:
- 440 g all-purpose flour 3 2/3 cups
- 6 g fine sea salt 1 teaspoon
- 3 g baking soda 1/2 teaspoon
- 6 g baking powder 1 1/2 teaspoons
Fats:
- 57 g unsalted butter, melted and slightly cooled 4 tablespoons
- 40 g avocado oil or neutral flavor oil 3 tablespoons
Instructions
The Night Before:
- In a large mixing bowl, whisk together the milk and sourdough starter until well combined and slightly frothy.
- Add the eggs, maple syrup, and vanilla extract. Whisk vigorously for 30 seconds until the mixture is smooth and homogeneous.
- Add all dry ingredients: flour, salt, baking soda, and baking powder. Using a wooden spoon or spatula, stir gently until you have a shaggy, slightly lumpy batter. Don’t overmix.
- While stirring slowly, drizzle in the melted butter first, followed by the avocado oil. Fold everything together with gentle strokes until the fats are completely incorporated and you have a thick, pourable batter.
- Cover the bowl tightly with plastic wrap or a lid. Refrigerate for 12-18 hours.
The Next Morning:
- Remove the batter from the fridge. It should look slightly puffy with small bubbles throughout and smell pleasantly tangy. Give it a gentle stir to reincorporate.
- Preheat your waffle iron according to manufacturer’s instructions. Lightly spray with cooking oil even if nonstick.
- Pour 1/2 to 3/4 cup of batter into the waffle iron (adjust based on your iron size). Close the lid and cook for 3-4 minutes, until steam stops and the waffle is deep golden brown.
- Serve immediately with your favorite toppings.
Notes
Timing Flexibility: The 12-18 hour fermentation window is forgiving. Mixed at 8 PM? Cook anytime between 8 AM and 2 PM the next day.
Storage: Batter stays good in the fridge for up to 24 hours after mixing. You can make it two nights before if needed.
Freezing: Cook extra waffles and freeze in a single layer, then transfer to a freezer bag. Toast straight from frozen for quick breakfasts. Good for up to 3 months.
Customization: Add 1/2 cup chocolate chips or blueberries before cooking, or fold in 1 teaspoon cinnamon with dry ingredients.
Crispy Tip: Don’t open the waffle iron too early. Wait until steam stops coming out for maximum crispiness.
The Science of Fat Integration
Most recipes tell you to add melted butter in the morning, right before cooking. But when you add butter to your batter the night before, something beautiful happens. When you drizzle melted butter and avocado oil into your batter while it’s still slightly warm from mixing, the fats emulsify into the mixture rather than sitting on top or clumping. Here’s why this matters: Fat coats the flour proteins gradually As you fold the melted butter and oil into your batter, the fats coat the gluten strands that are forming. This creates tender waffles because the fat literally gets between the gluten molecules, preventing them from forming tough, chewy networks. When you add fat in the morning to cold batter, it doesn’t distribute as evenly. Flavor develops during fermentation Butter contains milk solids that actually ferment alongside your sourdough starter. During that 12-18 hour rest in the fridge, those milk solids interact with the lactic acid bacteria in your starter, creating deeper, more complex flavors. It’s like aging cheese, the cultures do their magic over time. The cold doesn’t matter Many bakers worry that butter will solidify in the fridge. But because you’re emulsifying it into the batter (not just stirring cold butter into cold batter), it stays integrated. The mixture is homogeneous, and when you pull it out in the morning, a quick stir brings everything back together beautifully. Avocado oil is your secret weapon By combining butter (for flavor) with avocado oil (for crispiness and a higher smoke point), you get the best of both worlds. The avocado oil has a neutral taste that won’t compete with your toppings, and it creates those gorgeously crispy edges that make waffles irresistible.