This sourdough granola turns your discard into the crunchiest, most flavorful granola you’ll make. Sourdough discard gives it a light, crisp texture and a subtle tang that tastes far more interesting than the store-bought stuff.

You only need one bowl, about ten minutes of hands-on work, and your starter’s leftover. The result is a batch that keeps for weeks and makes the whole kitchen smell like toasted honey and oats.

Why This Sourdough Granola Works

The discard mixes right into the wet ingredients, no special technique. As it bakes, it creates a lacy, shatteringly crisp shell around the oats and nuts. The tang is gentle, not sour, and it balances the honey perfectly.

I’ve made dozens of granolas, and this one is the batch I keep coming back to. It clusters beautifully without any extra effort and tastes a little more interesting than the plain sweet kind.

Ingredients

3 cups old-fashioned rolled oats: not quick oats; they hold their shape.
1 cup raw nuts (almonds, pecans, or walnuts): roughly chopped.
1/2 cup raw seeds (pumpkin or sunflower): for extra crunch.
1/2 cup unsweetened shredded coconut: optional, but adds a toasty note.
1/2 cup honey or maple syrup: honey gives a deeper flavor; maple works for a vegan batch.
1/3 cup melted coconut oil or neutral oil: helps crisp the clusters.
1 tsp vanilla extract
1/2 tsp fine sea salt
1/2 cup sourdough discard: unfed, 100% hydration starter.

Variations / Substitutions

Sweetener: swap honey for maple syrup to make the batch vegan.
Nuts and seeds: use any combination you like, keeping the total around 1 1/2 cups.
Dried fruit: stir in 1/2 cup dried cherries or raisins after baking so they stay chewy.
Spice: add a pinch of cinnamon or cardamom to the wet mix for a warm note.

If you like an even chunkier granola, try my Maple Almond Granola.

How to Make Crispy Sourdough Discard Granola

Step 1: Whisk the Wet Base

Preheat the oven to 300°F (150°C). In a large bowl, whisk together the 1/2 cup honey, 1/3 cup melted coconut oil, 1 tsp vanilla, 1/2 tsp salt, and the 1/2 cup sourdough discard until smooth.

The mixture will look a little cloudy and loose, but that’s normal. The discard will turn translucent and sticky as it bakes.

Step 2: Toss with Oats and Nuts

Add the 3 cups oats, 1 cup nuts, 1/2 cup seeds, and the 1/2 cup coconut if you’re using it. Stir with a spatula until every piece is evenly coated. The oats will feel heavy and damp, with thin strands of discard clinging to them.

Pour the mixture onto a parchment-lined baking sheet and press it firmly into an even, compact layer. Pressing it down now is what gives you big, bakery-style clusters later.

Step 3: Bake Slow and Low

Bake for 30 minutes, then rotate the pan and continue baking 15 to 20 minutes more, until the granola is deeply golden and feels dry to the touch. Do not stir at any point. The total bake time will be around 45 to 50 minutes.

The granola will still feel soft when you pull it from the oven. It gets crispy as it cools, so don’t yank it out too early. That deep golden color is your sign the sugars have caramelized properly.

Step 4: Break into Crunchy Clusters

Let the granola cool completely on the sheet pan, about 30 minutes. Once it’s fully cool to the touch, lift the slab off the parchment and snap it into big, rustic chunks.

If you like dried fruit, scatter it over the broken pieces now and give a gentle toss. The clusters should sound hard when they hit the bowl.

A Few Notes for the Best Granola

Press the mixture down hard before baking. The tighter the slab, the bigger your final chunks.
Don’t stir while baking. Stirring breaks the clusters and prevents that slab from forming.
Use old-fashioned rolled oats. Quick oats turn dusty and won’t give you the same texture.
Let it cool entirely before breaking. Warm granola crumbles into small bits instead of snapping.

This recipe doubles easily. Just use two sheet pans so the granola toasts evenly.

Batch	Oats	Honey	Oil	Discard
Half	1 1/2 cups	1/4 cup	2 1/2 tbsp	1/4 cup
Full (as written)	3 cups	1/2 cup	1/3 cup	1/2 cup
Double	6 cups	1 cup	2/3 cup	1 cup

Keeping It Crunchy

Store the cooled granola in an airtight container at room temperature for up to 2 weeks. For longer storage, freeze it in a zip-top bag for up to 3 months. No need to reheat; just eat it straight from the bag or let it come to room temp.

What to Serve with This Granola

A bowl of thick Greek yogurt and fresh berries lets the creaminess play off the crunch. Swirl it into a smoothie bowl for extra texture. Or pour over a splash of cold milk; the tang of the sourdough comes through especially nicely that way.

Frequently Asked Questions

Can I use active starter instead of discard?

Yes, active starter works just as well. The flavor will be a touch milder because it has less acidity, but the clusters still turn out crisp.

My granola isn’t crunchy. What went wrong?

It likely needed more oven time. Bake until it’s deeply golden and feels dry to the touch. Also be sure you let it cool completely before breaking; it finishes crisping on the pan.

Can I make this vegan?

Yes. Swap honey for maple syrup and use coconut oil. The recipe works exactly the same.

How do I get those big, bakery-style clusters?

Don’t stir once the pan is in the oven and press the mixture firmly onto the sheet before baking. Letting it cool undisturbed is what lets you snap it into large chunks.