Ingredients
Equipment
Method

- Preheat oven to 375°F (190°C) and line two large baking sheets with parchment paper or silicone mats. Position rack in the center of the oven for even baking.
- In a large bowl, cream together room-temperature butter and granulated sugar using a mixer on medium-high speed for 2–3 minutes until light, fluffy, and slightly pale. Scrape down the bowl halfway through.
- Add the whole egg, egg yolk, and vanilla extract. Beat on medium speed for 1 minute until smooth and emulsified. Do not overmix.
- In a separate bowl, whisk flour, baking soda, and salt. Gradually add to the wet ingredients on low speed just until combined—about 30 seconds. Scrape bowl to ensure no dry spots.
- Using a spatula, fold in chocolate chunks and toasted walnuts until evenly distributed. The dough will be thick and sticky.
- Scoop into six 1/3-cup mounds per baking sheet, spacing at least 3 inches apart. Bake one sheet at a time for exactly 20 minutes until golden brown on edges and soft in center.
- Let cookies cool on the baking sheet for 10 minutes before transferring to a wire rack. They will continue to set as they cool.
Nutrition
Calories: 325 | Carbohydrates: 38 | Protein: 4 | Fat: 18 | Fiber: 2 | Sugar: 22
Notes
STORAGE: Store in an airtight container at room temperature for up to 5 days. Add a piece of bread to keep soft. Freeze for up to 3 months.
MAKE AHEAD: Scoop and freeze dough balls; bake from frozen, adding 2-3 minutes.
SUBSTITUTIONS: Use coconut oil and avocado for dairy-free. Substitute walnuts with pecans or omit entirely. Use gluten-free 1:1 flour blend.
PRO TIPS: Use European-style butter for richer flavor and crispier edges. Do not skip toasting the walnuts. Bake one tray at a time for even results.
SERVING SUGGESTIONS: Serve warm with milk, ice cream, or as part of a dessert platter. Perfect for gifting or entertaining.
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