Sourdough Cinnamon Toast Crunch
Sourdough cinnamon toast crunch is a homemade take on a classic. For you sourdough folks, this is a great way to use up your discard!

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Ingredients
For the Dough:
- 120 grams of flour (1 cup)
- 56 grams cold butter (4 Tbsp)
- 25 grams brown sugar (2 Tbsp)
- 3 grams ground cinnamon (1 tsp)
- 2 grams salt ( 1/2 tsp)
- 62 grams sourdough starter discard (¼ cup) OR 65 grams active starter (1/3 cup)
- 2 grams vanilla extract (1/2 tsp)
- 15 grams cold water (1 Tbsp)
For the Cinnamon Sugar Topping:
- 50 grams of cane sugar (¼ cup)
- 2.5 grams ground cinnamon (1 tsp)
- 28 grams melted butter (2 Tbsp)
Equipment
Kitchen scale OR measuring cups
Food processor, optional (can mix by hand with a pastry cutter)
Silicone baking mat, optional
Pizza cutter or knife
Pastry brush, optional
Instructions
- Preheat your oven to 350 degrees F (about 180 degrees C).
- Mix together the Cinnamon Sugar topping: combine white sugar and ground cinnamon in a small bowl. Stir in melted butter until combined. Set aside.
- In a food processor, blend flour, brown sugar, ground cinnamon, and salt.
- Add cold butter and pulse until pea-sized crumbs form.
- Mix in vanilla extract, either sourdough starter (active or discard), and cold water.
- Roll out the dough using a rolling pin to about â…› inch thick. The thinner, the better to get the cereal to crisp up. I usually roll it out on a silicone baking sheet
- Score the dough with a pizza cutter, pastry cutter, or a sharp knife, marking squares but not cutting all the way through. This will make it easy to break into pieces after baking.
- Transfer your dough to a baking sheet (slide the silicone sheet onto a baking tray).
- Brush the scored dough with the cinnamon sugar topping.
- Bake for 15-25 minutes (depending on how thick your dough is rolled out) at 350 degrees F (about 180 degrees C), until golden brown and crisp.
- Let the cereal cool, then break it into squares. They should separate easily and be ready to enjoy right away with some milk or as a snack.
- Store in an airtight container, if you don’t eat it all at once!
If you like this recipe, try these!

Sourdough Cinnamon Toast Crunch
Make this easy sourdough cinnamon toast crunch cereal at home!
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Rate
Servings: 4 servings
Calories: 379kcal
Equipment
- 1 Food Processor optional
- 1 Pizza Cutter optional
- 1 pastry cutter optional
- 1 pastry brush optional
Ingredients
For the Dough
- 120 grams flour 1 cup
- 56 grams cold butter 4 Tbsp
- 25 grams brown sugar 2 Tbsp
- 2.5 grams ground cinnamon 1 tsp
- 2 grams salt 1/2 tsp
- 62 grams sourdough starter discard 1/4 cup
- 2 grams vanilla extract 1/2 tsp
- 15 grams cold water 1 Tbsp
For the Cinnamon Sugar Topping
- 50 grams cane sugar ¼ cup
- 2.5 grams ground cinnamon 1 tsp
- 28 grams melted butter 2 Tbsp
Instructions
- Preheat your oven to 350 degrees F (about 180 degrees C).
- Mix together the Cinnamon Sugar topping: combine white sugar and ground cinnamon in a small bowl. Stir in melted butter until combined. Set aside.50 grams cane sugar, 2.5 grams ground cinnamon, 28 grams melted butter
- In a food processor, blend flour, brown sugar, ground cinnamon, and salt.120 grams flour, 25 grams brown sugar, 2.5 grams ground cinnamon, 2 grams salt, 56 grams cold butter
- Add cold butter, pulsing until pea-sized crumbs form.
- Mix in vanilla extract, either sourdough starter (active or discard), and cold water*62 grams sourdough starter discard, 2 grams vanilla extract, 15 grams cold water
- Roll out the dough using a rolling pin to about â…› inch thick. The thinner, the better to get the cereal to crisp up. I usually roll it out on a silicone baking sheet
- Score the dough with a pizza cutter, pastry cutter, or a sharp knife, marking squares but not cutting all the way through. This will make it easy to break into pieces after baking.
- Transfer your dough to a baking sheet (slide the silicone sheet onto a baking tray).
- Brush the scored dough with the cinnamon sugar topping.
- Bake for 15-25 minutes at 350 degrees F (about 180 degrees C), until crisp.
- Let the cereal cool, then break it into squares. They should separate easily and be ready to enjoy right away with some milk or as a snack.
- Store in an airtight container, if you don’t eat it all at once!
Notes
If the dough is too crumbly when mixing, add cold water one tablespoon at a time until it does.
Nutrition
Serving: 91g | Calories: 379kcal | Carbohydrates: 49.6g | Protein: 5.5g | Fat: 18g | Saturated Fat: 10.8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 0.7g | Cholesterol: 49.1mg | Sodium: 291.6mg | Potassium: 79.1mg | Fiber: 1.6g | Sugar: 19.4g | Vitamin A: 143.8IU | Calcium: 29.9mg | Iron: 1.1mg
