Ingredients
Equipment
Method
- Step 1 — Preheat and Prepare: Preheat oven to 350°F (175°C) and position rack in the middle. Line a light-colored aluminum half-sheet pan with parchment paper. Do not use dark non-stick pans or foil — dark pans overbrown the bottoms before the centers set.
- Step 2 — Combine Butter and Sugars: Pour cooled melted butter (170g) into a large mixing bowl. Add packed brown sugar (165g) and granulated sugar (50g). Whisk vigorously for 60–90 seconds until smooth, unified, and slightly glossy — no dry pockets of brown sugar remaining at the bowl bottom.
- Step 3 — Add Eggs and Vanilla: Add both room-temperature eggs one at a time, whisking fully after each. Add vanilla extract (1½ tsp) with the second egg. Whisk 30–45 seconds until smooth, slightly thickened, and no egg white streaks remain. Switch to a silicone spatula.
- Step 4 — Add Dry Ingredients: Add flour (190g), old-fashioned rolled oats (135g), baking soda (1 tsp), and fine sea salt (¾ tsp) directly to the bowl. Fold with the spatula using wide slow strokes — 15 to 20 folds — until no dry flour streaks remain and oats are evenly distributed. Do not overmix — overmixing after the flour goes in produces a tough, dense center instead of the soft fudgy result shown in the photos.
- Step 5 — Fold In Chips and Portion: Add semi-sweet chocolate chips (255g) and fold until evenly distributed — approximately 8 to 10 folds. For the dark chocolate chunk variation, replace chips with 255g roughly chopped dark chocolate (70%+ cacao). Scoop dough into 45g balls using a medium cookie scoop. Space 2 inches (5cm) apart on the prepared pan. Press 4–5 extra chips onto the top of each ball before baking.
- Step 6 — Bake: Bake at 350°F (175°C) for 10–12 minutes. Begin checking at 10 minutes. Pull the pan when edges are set and lightly golden with a faint surface crackle and centers still look slightly underdone and puffy. Do not wait for centers to look fully set — they finish on the pan.
- Step 7 — Rest and Cool: Leave cookies on the hot pan for exactly 5 minutes — do not move them. For the dark chocolate chunk variation, scatter flaked sea salt (1 tsp) over cookies immediately after pulling from the oven, before the 5-minute rest. After 5 minutes, transfer to a wire cooling rack. Cool for at least 10 minutes before eating — centers continue to set as they cool.
Notes
Flour: Spoon and level — never scoop directly from bag. Or weigh at 190g. Packed flour produces dry, cakey cookies.
Butter: Must be melted and cooled to room temperature before use — warm butter causes excessive spread and a greasy, flat result.
Oats: Old-fashioned rolled oats only. Quick oats dissolve into dough and eliminate the distinct oat texture and chew shown in the photos.
Baking soda: Check freshness before baking — drop ½ tsp into hot water with white vinegar. Aggressive bubbling confirms it is active.
Brown sugar: Must be packed. Hardened brown sugar — microwave with a damp paper towel in 20-second increments until pliable before measuring.
Chocolate chips: Semi-sweet 45–55% cacao recommended. For the dark chunk variation, use 70%+ cacao bar chocolate, hand-chopped into irregular pieces.
Flaked sea salt: For the dark chocolate chunk variation only — scatter immediately after pulling from oven while chocolate is still molten.
Chilling: No chilling required — dough goes straight from bowl to oven.
Scaling: To double, multiply all ingredients by 2 except baking soda — use only 1½ tsp, not 2 tsp, or cookies will taste soapy. Bake in sequential batches.
Make-ahead: Freeze portioned dough balls up to 3 months. Bake from frozen at 350°F (175°C) for 13–14 minutes — no thawing needed.
Storage: Lidded hard-sided container with parchment between layers, room temperature up to 4 days. Do not use zip-lock bags — pressure flattens cookies and changes texture.
Freezer (baked): Wrap individually in plastic wrap, then place in a freezer bag. Freeze up to 2 months. Thaw at room temperature 20–30 minutes or reheat at 300°F (150°C) for 4–5 minutes.
Allergens: contains gluten, dairy, and eggs. Semi-sweet chocolate chips may contain soy lecithin — check your label. For dairy-free, substitute coconut oil at same weight.
High altitude: Reduce baking soda by ¼ tsp, increase flour by 1–2 tbsp (8–16g), reduce brown sugar by 1 tbsp (14g), raise oven to 360°F (182°C). Start checking at 9 minutes.