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Sourdough Discard Breakfast Bars (With Collagen)

By Sharon Nissley

Protein-forward sourdough discard breakfast bars with Greek yogurt, oats, chia, flax, and collagen for a more balanced grab-and-go breakfast.

Soft baked breakfast bars sliced into squares on a sheet pan.

Prep

10 mins

Cook

24-28 mins

Total

34-38 mins

Calories

222 kcal

Protein

11.2 g

Carbohydrates

29.6 g

Serves

10 bars

Fat

6.8 g

Longevity

61/100

If you have sourdough discard in the fridge and want a breakfast bar that is more balanced than a typical sweet bake, this version leans into protein, fiber, and steadier energy. Greek yogurt, eggs, collagen, oats, chia, and flax make the bars more filling, while applesauce, blueberries, and just a little maple syrup keep them soft and lightly sweet without pushing them into muffin-dessert territory.

Quick Answer

  • Method: One-bowl breakfast bars
  • Oven: 350 F
  • Bake time: 24 to 28 minutes
  • Pan: Lined 9 x 13 pan
  • Yield: About 10 bars

Why This Version Scores Better Functionally

  • More protein from Greek yogurt, eggs, and 2 scoops of collagen
  • More fiber from oats, chia, flax, applesauce, and blueberries
  • Better fat quality from olive oil instead of butter or coconut oil
  • Lower added sweetener than the original version

Note

Contains Amazon affiliate links. As an influencer, I may earn a small commission.

sheet pan of sour dough discard

Tips

  • Let the batter sit for 5 minutes so the chia hydrates before baking
  • Use unsweetened applesauce to keep the bars softer without adding much sugar
  • Cool fully before slicing so the bars firm up cleanly

Ingredients

Servings
UnitsStandard
Keep awakeAuto-sleepNot supported
  • Proteins
  • Fiber / plants
  • Fats
  • Flavor / spices

Ingredient notes

  • Greek yogurt adds more protein and moisture than the old kefir-only approach.

  • Oat flour keeps the bars whole-grain and avoids the functional-score hit from refined flour.

  • Chia and flax help lift fiber, omega-3s, and satiety without making the bars taste overly seedy.

Step-by-step

10 bars
  1. 1

    Step 1

    Preheat the oven

    • Action: Preheat the oven to 350 F and line a 9 x 13 pan with parchment paper.
  2. 2

    Step 2

    Mix the wet ingredients

    • Ingredients:
      • 1 cup sourdough discard
      • 1 cup plain Greek yogurt
      • 3 eggs
      • 2 tablespoons olive oil or avocado oil
      • 2 tablespoons maple syrup or honey
      • 1 teaspoon vanilla extract
      • 1/2 cups unsweetened applesauce
    • Action: Whisk the wet ingredients together until smooth.
  3. 3

    Step 3

    Stir in the dry ingredients

    • Ingredients:
      • 1 1/2 cups rolled oats
      • 1/2 cups oat flour
      • 2 scoops collagen peptides
      • 2 tablespoons chia seeds
      • 1 tablespoon ground flaxseed
      • 1/2 teaspoons baking soda
      • 1 teaspoon cinnamon
      • Pinch of salt
    • Action: Stir until the batter is evenly combined.
  4. 4

    Step 4

    Fold in the fruit

    • Ingredients:
      • 1/2 cups blueberries
    • Action: Fold in the blueberries, then let the batter rest for 5 minutes so the chia can hydrate.
  5. 5

    Step 5

    Spread in the pan

    • Ingredients:
      • Batter
    • Action: Spread the batter evenly into the prepared pan.
  6. 6

    Step 6

    Bake

    • Ingredients:
      • Filled pan
    • Action: Bake for 24 to 28 minutes, until the center is set and the edges are lightly golden.
  7. 7

    Step 7

    Cool and slice

    • Ingredients:
      • Baked bars
    • Action: Cool completely, then slice into 10 bars.

Step insights

  1. The batter thickens as the chia, flax, oats, and collagen absorb moisture, so a short rest before baking improves texture and structure.

Equipment

  • Large mixing bowl

  • Whisk

  • Spatula or spoon

  • Parchment paper

  • Breville Joule Toaster Oven (optional)

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Sourdough Discard Breakfast Bars (With Collagen) | NapTime Village