There is a moment in a pan of melting butter when nothing is happening, and then everything is. The foam climbs, goes quiet, and the milk solids at the bottom start to toast. You smell it before you see it. Hazelnut, caramel, something close to toffee. The French call it beurre noisette. We call it brown butter, and it is the cheapest trick in any kitchen I have ever stood in.
I keep coming back to it because it refuses to stay in one cuisine. On a Tuesday it is a sauce: a redfish fillet seared hard in a hot pan, a squeeze of lemon, a spoonful of capers, and brown butter poured over the top straight from the skillet. Three minutes, four ingredients, and it tastes like somebody trained for it. That same pan, a week later, is doing something Italian. Brown butter and torn sage over squash ravioli, a little pasta water swirled in to bring it together. Or it is stirred into grits, or over roasted carrots, or folded into mashed potatoes, where it does the work of twice as much butter.
The tell is the bottom of the pan, not the top.
Then there is the chocolate side of it, which is where most of my curiosity has gone. We have made brown butter ganache in the kitchen here. You brown the butter, let it cool, and fold it into a dark chocolate emulsion in place of some of the fat. The result is not buttery. It is nuttier. Rounder. It tastes like somebody toasted the chocolate itself. We have done the same with caramel, taking the butter all the way to noisette before the cream goes in, and it deepens the whole thing by a full shade. Brown butter buttercream. Brown butter in a pecan filling. I have a running list and it keeps getting longer.
What I like about it is the honesty of it. Nothing gets added. You do not put a single thing in that pan that was not already there. You apply heat and attention until the milk proteins toast, and a familiar ingredient turns into a different one. That is most of what we do here, when I think about it long enough.
The easiest place to taste the difference is a chocolate chip cookie. Brown the butter, let it cool, and the whole cookie shifts toward toffee. Deeper. Chewier at the edge. This is the cookie that I make at home.
Brown Butter Chocolate Chip Cookies
Ingredients
- 2 sticks (226 g) unsalted butter
- 2 tablespoons cold water
- 1 cup (200 g) dark brown sugar, packed
- 1/2 cup (100 g) granulated sugar
- 2 large eggs plus 1 egg yolk, at room temperature
- 2 teaspoons vanilla extract
- 2 1/2 cups (315 g) all-purpose flour
- 1 teaspoon baking soda
- 1 1/4 teaspoons kosher salt
- 8 oz (226 g) dark chocolate, chopped into uneven shards
- Flaky sea salt, for finishing
Brown the butter
- Cut the butter into pieces and melt it in a light-colored saucepan over medium heat. Light-colored matters. You are going to judge this by sight, and you cannot see amber in a black pan.
- It will foam, then quiet down. Swirl the pan every twenty seconds or so. After five to seven minutes the milk solids on the bottom will turn a toasted brown and the smell will go nutty. That is the moment. It goes from perfect to burnt in about thirty seconds, so stay there.
- Pour it immediately into a heatproof bowl, scraping every one of those brown flecks out with a spatula. Those flecks are the entire point of the recipe.
- Stir in the 2 tablespoons of cold water. Browning boils off about that much moisture, and putting it back is what keeps the cookies chewy instead of short and crumbly.
- Let it cool until it is barely warm to the touch, about 20 minutes. If you add eggs to hot butter you will scramble them.
Make the dough
- Whisk both sugars into the cooled brown butter until smooth. Let it sit for 3 minutes, then whisk again. Repeat once more. This dissolves the sugar and is where the crinkled tops come from.
- Whisk in the eggs, the extra yolk, and the vanilla until the mixture is glossy and slightly thickened.
- In a separate bowl, whisk the flour, baking soda, and kosher salt. Fold the dry into the wet with a spatula until just a few streaks of flour remain.
- Fold in the chocolate. Chop it yourself rather than using chips. Chips are built to hold their shape, which is exactly what you do not want here. Shards give you pools and thin veins running through the crumb.
- Cover and refrigerate for 24 hours. Overnight is fine. Two hours is better than nothing.
Bake
- Heat the oven to 375°F and line two sheet pans with parchment.
- Scoop the dough into 3-tablespoon balls, six to a pan, well spaced. Do not flatten them.
- Bake 11 to 13 minutes, until the edges are set and browned and the centers still look underdone and a little glossy. They will look wrong. Trust it.
- Sprinkle with flaky salt the second they come out. Let them sit on the hot pan for 5 minutes to finish setting, then move them to a rack.
