14tablespoonsunsalted butter, melted until browned and brought back to room temperature (see post for more on this)
2and 1/4 cups all-purpose flour (plus more ONLY if the dough seems to need it; adding one tablespoon at a time)
1teaspoonbaking soda
1/2teaspoonground cinnamon
1/2teaspoonkosher salt
1cup+ 2 tablespoons dark brown sugar, packed
1/2cupgranulated sugar
1tablespoonvanilla extract
2large eggs, at room temperature
2cupssemi-sweet chocolate chunks
3/4cuptoasted walnuts, roughly chopped
1teaspoonflaky sea salt, for sprinkling
Instructions
For the Brown Butter:
Place the butter in a small saucepan over medium-high heat and cook for about 3 minutes – stirring almost constantly – until the butter has browned. Pour the brown butter into a heatproof bowl, being sure to scrape all of the "toasted" bits into the bowl as well. Place the bowl in the refrigerator for 45 minutes, or until the butter is at room temperature. You’ll know the butter is at room temperature when you press a finger into the top and it makes a slight indentation. It should not be liquid at all.
Once the butter is at room temperature, you're ready to get baking!
Preheat your oven to 375 degrees (F).
For the Gooey Brown Butter Walnut Chocolate Chunk Cookies with Sea Salt:
In a medium-sized bowl whisk together the flour, baking soda, cinnamon, and salt; set aside.
In a large bowl using a handheld electric mixer, or in the bowl of a stand mixer fitted with the paddle attachment, combine both sugars, vanilla, and browned butter; cream on medium-speed until light and fluffy; about 2 minutes. Add in the eggs, one at a time, beating for 15 seconds after each addition. Turn mixer off. Using a wooden spoon or sturdy rubber spatula, gently fold in the flour, stirring only until the flour begins to disappear. Fold in the chocolate chunks and walnuts.
Roll 3 tablespoon sized scoops of dough between your palms to form a ball (they should be big; almost a 1/4 cup), then place on prepared sheet (make sure to leave enough room in between each cookie for inevitable spreading). Continue this process until all the dough has been rolled.
Place baking sheets in preheated oven, one at a time, and bake for 9 to 10 minutes, or until golden at the edges but still soft in the middle. Repeat with all cookie dough.
Sprinkle cookies with sea salt right when they come out of the oven. Let cookies cool for 10 minutes on the baking sheet before transferring to a wire rack to cool completely.
Notes
Total time includes chilling the brown butter.
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