Ingredients
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All-purpose flour — ¾ cup + 1 tsp (95 g)
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Bread flour (or sub AP; see note) — 1 cup + 1 tsp (125 g)
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Fine sea salt — 1 tsp (5 g)
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Baking soda — ¼ tsp
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Baking powder — ½ tsp
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Large egg — 1
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Sourdough starter discard (unfed) — ½ cup (125 g), room temp
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Vanilla extract — 1 tsp (5 g)
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Unsalted butter, cold & cubed — 8 tbsp (113 g)
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Light brown sugar — ½ cup (100 g)
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Granulated sugar — ½ cup (100 g)
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Chocolate chips (semi-sweet or milk) — 1 ½ cups (340 g)
Instructions
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Whisk dry ingredients: In a small bowl, whisk bread flour, all-purpose flour, baking soda, baking powder, and salt until evenly combined.
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Mix wet ingredients (egg/discard): In another small bowl, whisk the egg, sourdough discard, and vanilla until smooth and glossy.
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Cold-cream butter & sugars: In a stand mixer fitted with a paddle on low speed, beat cold cubed butter with brown sugar and granulated sugar just until small crumbles form (45–60 seconds). Add chocolate chips; mix on low 30–45 seconds to coat. Scrape the bowl.
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Bring dough together: Add the dry mix; blend on low 20–30 seconds until sandy. Pour in the egg/discard mixture; mix on low 20–30 seconds until the dough pulls from the sides. Finish by hand with a spatula to ensure no dry pockets remain.
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Scoop & chill: Scoop 12 large dough balls (about two scoops stacked per cookie). Place on a parchment-lined tray, cover, and chill at least 2 hours (24 hours for best flavor/texture).
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Bake: Preheat the oven to 375°F (190°C). Arrange 6 dough balls per sheet with ample spacing. Bake 15–17 minutes, until edges are golden and centers look slightly under-baked. Cool on the sheet 5 minutes, then transfer to a rack. Cookies set as they cool for that soft, chewy middle.
Notes
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Flour swap: Using all-purpose flour instead of bread flour yields slightly less chew but still a plush, soft cookie.
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Why chill: Resting hydrates starches and lets the discard’s mild acidity deepen flavor and improve chew.
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Make-ahead: Chill up to 48 hours. Or freeze portioned balls up to 2 months; bake from frozen at 375°F (190°C) adding 1–2 minutes.
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Size: For smaller cookies (24), bake 10–12 minutes.
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Mix-ins: Try half chips/half chopped chocolate for varied melt; finish warm cookies with a pinch of flaky salt.
- Prep Time: 20 minutes
- Cook Time: 16 minutes per batch
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cookie
- Calories: 275
- Sugar: 20 g
- Sodium: 190 mg
- Fat: 12 g
- Saturated Fat: 7.5 g
- Unsaturated Fat: 4.3 g
- Trans Fat: 0 g
- Carbohydrates: 36 g
- Fiber: 1 g
- Protein: 3.5 g
- Cholesterol: 36 mg