Recipe

Sourdough Discard Granola

Crunchy, maple-kissed granola clusters made with sourdough discard for tang, texture, and zero-waste breakfast prep.

By Matt Campbell

•

4.8

A real photograph of chunky sourdough discard granola clusters cooling on a parchment-lined sheet pan with a wooden spoon nearby in a bright home kitchen

Granola is already a pantry miracle, but add sourdough discard and it turns into a cluster machine. You get that cozy bakery tang, a deeper toastiness, and the kind of crisp crunch that makes yogurt feel like a full event. This is my go-to when I have unfed starter hanging out in the fridge and I want breakfast to be basically done for the next week.

We bake it low and slow so the oats and nuts dry out evenly without scorching the sweetener. The discard adds a subtle tang and a little extra stickiness, but the biggest cluster payoff still comes from the full method: enough sweetener, a good press, and not touching it while it cools.

A real photograph of homemade sourdough discard granola stored in a clear glass jar on a kitchen counter with a scoop and a bowl of yogurt nearby

Why It Works

Big clusters, not granola dust: The combo of sweetener, oil, pressing, and hands-off cooling creates those chunky pieces. The discard adds a little extra stickiness and a subtle tang.
Balanced sweetness: Maple syrup or honey brings caramel notes without turning the whole thing into candy.
Warm spice payoff: Cinnamon plus a pinch of salt makes everything taste more toasted and more expensive.
Flexible and forgiving: Swap nuts, change spices, use what you have. This recipe is friendly like that.

Pairs Well With

Storage Tips

How to Store It

Cool completely: Let the granola cool fully on the pan before storing. Warm granola = trapped steam = sad crunch.
Jar it up: Store in an airtight jar or container at room temperature for up to 2 weeks for best crunch.
If it softens: Spread on a sheet pan and re-crisp for 5 to 8 minutes in a 300°F oven, then cool again before storing.
For maximum clusters: Keep it in larger pieces and avoid shaking the container like it owes you money.
Freezer option: Freeze in a zip-top bag for up to 3 months. Thaw at room temp, then crisp for 5 minutes in a 300°F oven if needed.

Meal prep tip: Make a double batch, then portion into small jars for grab-and-go toppings.

Common Questions

Do I have to use sourdough discard? Can I use active starter?

Discard is ideal because it is unfed and more acidic, which gives that gentle tang. Active starter works too, but the flavor will be milder. Use the same amount and aim for a pourable, pancake-batter consistency.

What kind of discard is best for granola?

A plain flour-and-water starter is the easiest. Any hydration level works, but thicker discard may need a little extra oil to coat everything well.

What to look for: The mixture should look evenly glossy and lightly sticky with no dry oat patches. If it looks dry, add 1 to 2 tablespoons more oil and stir again.

Why is my granola not clumping?

Most of the time it is one of these: not enough sweetener to help bind, stirring too often, crowding the pan, or not pressing the mixture down before baking. Press it into an even layer, bake low, then let it cool completely before breaking. The discard helps, but the real cluster magic is the sweetener + oil + pressing + hands-off cooling.

Can I make it nut-free?

Yes. Swap the nuts for more oats, pumpkin seeds, sunflower seeds, or coconut chips. Keep the total add-ins about the same so it bakes evenly.

When do I add dried fruit or chocolate?

Add them after baking once the granola is cool. Dried fruit can harden in the oven, and chocolate will melt into a puddle.

Is sourdough discard granola actually sour?

Not sour like candy. Think subtle tang, like a lightly cultured note that makes the sweetness taste more balanced.

Is it gluten-free or vegan?

It can be. Use certified gluten-free oats if needed. For vegan, use maple syrup (not honey).

Matt Campbell

I have always had a huge passion for the culinary arts, people, working as a team, and so on. I wanted to pursue my love for cooking initially at Virginia Commonwealth University with a culinary arts degree; however, I instead decided to apply myself and acquire more practical skills. My end goal is to eventually open my own restaurant or similar establishment.

Kitchen Essentials

Large mixing bowl
Measuring cups and spoons (or a kitchen scale)
Rubber spatula
Rimmed half-sheet pan (18x13-inch) (see note if using smaller)
Parchment paper
Cooling rack (optional but helpful)
Airtight jar or container for storage

Pan note: This is a fairly full batch. A half-sheet pan gives it room to toast instead of steam. If your pan is smaller, split the mixture between two pans.

I used to treat sourdough discard like that awkward extra sock from laundry day. I knew it belonged somewhere, I just did not want to deal with it right now. Then I started making granola with it, mostly as a “please do not waste food” experiment. The first batch came out with these ridiculous crunchy clusters and a little tang that made it taste like something you would overpay for in a cute cafe. Now, if I have discard in the fridge, there is a solid chance it is about to become breakfast crunch.

Sourdough Discard Granola

(4.8 Reviews)

Prep Time 10 minutes

Cook Time 45 minutes

Total Time 1 hour 40 minutes

Servings About 12 servings (makes about 6 cups)

Ingredients

3 cups (270g) old-fashioned rolled oats
1 cup (120g) chopped nuts (almonds, pecans, walnuts, or a mix)
1/2 cup (60g) seeds (pepitas or sunflower seeds), optional
1 teaspoon ground cinnamon
1/4 teaspoon ground ginger, optional
1/4 teaspoon fine salt
1/3 cup (80g) neutral oil (avocado, grapeseed, melted coconut oil, or light olive oil), plus more if needed
1/2 cup (160g) maple syrup or honey
1/2 cup (120g) sourdough discard (unfed starter), room temp if possible
1 teaspoon vanilla extract
1/2 cup (75g) dried fruit (raisins, cranberries, chopped apricots), added after baking
1/3 cup (60g) chocolate chips or cacao nibs, optional and added after baking

Optional mix-in ideas: toasted coconut flakes, sesame seeds, orange zest, cardamom, or a spoonful of nut butter stirred into the wet mix for extra richness.

Instructions

Heat the oven and line the pan. Preheat to 300°F. Line a rimmed half-sheet pan (18x13-inch) with parchment paper. (If your pan is smaller, split the batch between two pans so it crisps instead of steaming.)
Mix the dry ingredients. In a large bowl, combine oats, nuts, seeds (if using), cinnamon, ginger (if using), and salt.
Whisk the wet ingredients. In a separate bowl or large measuring cup, whisk oil, maple syrup or honey, sourdough discard, and vanilla until smooth.
Combine and coat. Pour the wet mix over the dry mix. Stir well until everything looks evenly glossy and lightly sticky, with no dry pockets. If it looks dry or sandy, add 1 to 2 tablespoons more oil.
Press for clusters. Scrape onto the sheet pan and press into an even layer about 1/2 inch thick. Pressing helps it bake into larger chunks.
Bake low and slow. Bake for 25 minutes. Rotate the pan, then bake 15 to 20 minutes more until it smells deeply toasted and looks golden at the edges.
Know when it is done. It may still feel a little soft in the center when it comes out. That is normal. It crisps as it cools. If it looks pale and feels oily-wet, give it 5 more minutes.
Cool completely before breaking. Remove from the oven and let cool on the pan for 30 to 45 minutes. Do not stir while hot if you want big clusters.
Add mix-ins. Once fully cool, break into clusters and toss with dried fruit and chocolate (if using).
Store. Transfer to an airtight jar or container and keep at room temperature.

A real photograph of sourdough discard being poured into a mixing bowl of oats and nuts with a spatula in a home kitchen

Nutrition information is estimated.

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