Fudge BrowniesRecipe

1. 1.Cut 303g of butter into pieces and cook in a light-colored saucepan over medium heat. The butter will melt, then foam, then quiet down. Keep cooking, swirling the pan occasionally, until you can smell the nuttiness: golden brown milk solids on the bottom of the pan, deep golden color throughout, and a calm sizzle. Usually 8 to 12 minutes total. Watch closely in the last minute. It goes from perfect to burnt fast.
2. 2.Pour the brown butter, including all the brown bits, into a heatproof non-glass container. ⚠️ Hot brown butter is around 270°F / 130°C and can shatter glass, especially if you cool it quickly in an ice bath. Use a metal bowl, ceramic dish, or heatproof silicone container instead.
3. 3.Let the brown butter cool until solidified. Room temperature takes 60 to 90 minutes; the fridge is faster (about 30 minutes), but check on it so it stays firm-creamy and not rock-hard.
4. 4.Note: browning reduces the butter's weight by about 15 to 20 percent from water evaporating. The recipe still turns out great without compensating; just use the brown butter as-is once it has solidified. If you want to be precise, bump the butter percentage up 15 to 20 percent in the calculator before browning.

1. 1.Preheat the oven to 350°F / 175°C. Line the pan with parchment, leaving overhang on two sides as handles. Grease the parchment lightly.
2. 2.In a stand mixer with the paddle attachment (or a large bowl with a hand mixer), beat the solidified brown butter and 349g granulated sugar on medium speed for 3 to 5 minutes. The mixture should lighten in color, grow slightly in volume, and look pale and fluffy. You are working air into the fat — that air is what gives the finished brownie its crackly top crust. Stop the mixer once or twice to scrape down the sides of the bowl.
3. 3.Add the 233g dark brown sugar and mix on low just until combined. Brown sugar goes in after the granulated because the molasses interferes with the aerating process. The mixture will darken noticeably and feel slightly denser.

1. 1.Add the eggs (256g, about 4 to 5 large) one at a time, mixing on medium until each is fully incorporated. Scrape the bowl between additions.
2. 2.Add 16g vanilla extract and mix briefly to incorporate. The batter should be smooth and glossy.
3. 3.In a separate bowl, whisk together 233g flour, 116g Dutch-process cocoa, 7g salt, 4.7g baking powder, and (if using) 2.3g espresso powder until uniform with no cocoa or espresso lumps.
4. 4.Add the dry ingredients to the wet in two additions, folding with a rubber spatula until just combined. Stop the moment you see no more dry streaks. Overmixing develops gluten and toughens the crumb.

1. 1.Fold in any mix-ins you've toggled on: chocolate chips/chunks (233g at the default), nuts (0g — off by default), and so on. Peanut butter goes on top of the spread batter as a peanut butter swirl, not folded in — see the next step.
2. 2.Scrape the batter into the prepared pan and spread evenly. Tap the pan gently on the counter once or twice to settle the batter and pop large air bubbles. If using peanut butter, dollop it in 6 to 8 spots on top of the spread batter and drag a knife through to create the swirl.

1. 1.Bake at 350°F / 175°C on the middle rack. Start checking at 28 minutes for a 9x13, 22 minutes for an 8x8, and 38 minutes for an 11x15 quarter sheet. Done when the edges are set, the top is crackled, and a toothpick inserted 1 inch from the edge comes out with moist crumbs (not wet batter). The center can still jiggle slightly. It sets up as it cools.
2. 2.For brownie brittle edges — the crispy-chewy corner pieces some bakers love — bake 3 to 5 minutes past the normal done point. You trade a slightly drier middle for the brittle texture.
3. 3.Pull from the oven when the center just sets. Overbaking is the single most common mistake; brownies keep cooking from carryover heat for 10 or more minutes after they leave the oven. It's fine if the middle looks a little underdone when you pull it.

Bake times are forgiving. Your oven might run hot or cool, dark pans bake faster than light ones, and personal preference for fudgy versus set varies. Trust the toothpick test more than the clock.

1. 1.Cool in the pan on a wire rack at least 30 minutes for clean cuts. Two hours is better, overnight is best. Use the parchment overhang to lift the whole slab out, then cut on a board with a sharp knife. Wipe the blade between cuts for clean edges.
2. 2.Brown-butter brownies improve overnight. The brown butter flavor blooms, the fat redistributes, and the fudge texture firms up. If you can wait, bake the day before serving.

Store covered at room temperature for up to 4 days, or freeze cut squares in a single layer and then bag — they thaw in 20 minutes on the counter, or 10 seconds in the microwave.

1. 1.Preheat the oven to 350°F / 175°C. Line the pan with parchment, leaving overhang on two sides as handles. Grease the parchment lightly.
2. 2.Melt 303g butter in a saucepan or microwave. Pour into a large bowl while still warm but not screaming hot — around 110°F / 43°C.
3. 3.Add 349g granulated sugar and 233g dark brown sugar to the warm butter. Whisk hard for a full minute. The sugars should partially dissolve and the mixture should look glossy. This is the step that creates the crackly top crust — do not shortcut it.
4. 4.Whisk in 116g Dutch-process cocoa, 7g salt, and 16g vanilla until smooth. The batter will be thick.
5. 5.Add the eggs (256g, about 4 to 5 large) one at a time, whisking until each is fully incorporated. The batter will loosen and turn glossier.
6. 6.In a separate small bowl, whisk together 233g flour, 4.7g baking powder, and (if using) 2.3g espresso powder. Sprinkle over the top of the wet batter and fold in with a rubber spatula until just combined. No dry streaks; do not overmix.
7. 7.Fold in any mix-ins you've toggled on: chocolate chips/chunks (233g at the default), nuts (0g default), and so on. If using peanut butter, dollop it on top of the spread batter and swirl with a knife rather than folding in. Scrape the batter into the prepared pan and spread evenly.

If the batter looks runny, your butter was too hot when you added the eggs. Bake anyway — fudge brownies are forgiving and the texture will still be good.

1. 1.Bake at 350°F / 175°C on the middle rack. Start checking at 28 min for a 9x13; 22 min for an 8x8; 38 min for an 11x15 quarter sheet. Done when edges set, top crackled, and a toothpick 1 inch from the edge comes out with moist crumbs. The center can jiggle slightly.
2. 2.For brittle edges, bake 3-5 minutes longer than the normal done point. Pull when the center just sets — overbaking is the main mistake. They keep cooking 10+ minutes from carryover heat after the oven.

Times are forgiving; your oven and pan material affect bake time. Trust the toothpick more than the clock.

1. 1.Cool in the pan on a wire rack at least 30 minutes for clean cuts; 2 hours is better. Use the parchment overhang to lift the slab out, then cut on a board with a sharp knife.
2. 2.Brownies improve overnight as the fat redistributes and the fudge texture firms up. Store covered at room temperature 4 days, or freeze cut squares.