Sweet Potato Brownies

Dense, fudgy brownies where roasted sweet potato replaces most of the fat, giving you a rich chocolate bite with a subtly earthy sweetness. Toasted pecans folded into the batter and scattered on top add a buttery crunch that contrasts beautifully with the fudgy texture. This version is scaled 1.5× for a 9×13-inch pan, yielding 24 brownies with the same batter depth and fudgy texture as the original. They're naturally moist and hold up well for days — a genuinely good brownie, not just a virtuous one.

Ingredients

• sweet potato, peeled and cubed – about 1.5 large
• coconut oil or unsalted butter, melted – 4.5 tablespoons

• unsweetened cocoa powder – 3/4 cup
• all-purpose flour – 3/4 cup
• brown sugar, packed – 1 1/8 cups
• baking powder – 3/4 teaspoon
• fine salt – 3/8 teaspoon

• large eggs – 3 whole
• vanilla extract – 1.5 teaspoons

• dark chocolate chips (70%+) – 3/4 cup
• pecans, roughly chopped — toasted and divided – 1 1/8 cups

Instructions

1. Preheat your oven to 400°F (200°C). Toss 450g cubed sweet potato with a small drizzle of oil, spread on a baking sheet (use two sheets if needed to avoid crowding), and roast for 20–25 minutes until completely soft and slightly caramelized at the edges. In the last 6–8 minutes of roasting, spread 1 1/8 cup (128g) roughly chopped pecans on a small section of the baking sheet (or a separate tray) and toast alongside the sweet potato until fragrant and lightly golden. Watch them closely — they can burn quickly. Remove and set aside to cool. Roasting rather than boiling concentrates the sweetness and removes excess water — this matters for fudgy texture.
2. Reduce oven to 350°F (175°C). Grease a 9×13-inch baking pan and line it with parchment paper, leaving an overhang on two sides so you can lift the brownies out cleanly.
3. Mash the roasted sweet potato thoroughly — a fork works, but a food processor or blender gives the smoothest result. Measure out 360g (about 1.5 cups tightly packed) of mash. Let it cool for 5 minutes, then stir in 60g (4.5 tablespoons) melted butter or coconut oil.
4. Whisk the eggs, brown sugar, and vanilla into the sweet potato mixture until fully combined and glossy.
5. Add the cocoa powder, flour, baking powder, and salt directly to the bowl. Fold everything together with a spatula until just combined — stop as soon as you don't see dry streaks. Overmixing develops gluten and toughens the brownies.
6. Fold in most of the chocolate chips and about 3/4 cup (85g) of the toasted pecans into the batter, then pour into your prepared 9×13-inch pan and spread it level. Scatter the remaining chocolate chips and the remaining pecans (about 1/3 cup / 43g) over the top.
7. Bake for 25–30 minutes. The edges should be set and the center should have just a slight jiggle — a toothpick inserted 1 inch from the edge should come out with moist crumbs, not wet batter. Start checking at 25 minutes. Don't overbake; these firm up considerably as they cool.
8. Cool in the pan for at least 20 minutes before lifting out and slicing. For the cleanest cuts, refrigerate for 30 minutes first and use a sharp knife wiped between slices.