Oatmeal Fudgy Walnut Brownies

These oatmeal brownies are a clever flourless brownie that uses quick oats as both binder and structural element. The oats absorb moisture from the eggs and melted chocolate, swelling into a tender, slightly chewy matrix that holds the brownie together. The result is denser than typical brownies, with a fudgy center and a chewy texture from the oats running through every bite.

Melt the chocolate and butter together over a double boiler (a bowl set over hot, not boiling, water). Direct heat scorches chocolate in seconds. Skip the bain-marie at your peril.

Beat the eggs until truly light and fluffy before adding sugar. This is unusual for a brownie recipe but it’s what gives these their slight rise and chewy-on-top, fudgy-inside contrast. Skipping the egg-whipping step gives you flat, dense brownies.

Use quick-cooking oats, not old-fashioned rolled oats. Quick oats are smaller and absorb moisture faster, giving you the right tender texture. Rolled oats stay too distinct and chewy, ruining the brownie texture you want.

Walnuts are the called-for nut here, and their slight bitterness pairs beautifully with the sweet chocolate. Toast them first for noticeably deeper flavor.

Don’t overbake. Pull at 30 minutes if a toothpick has moist crumbs (not wet batter, not totally clean). They firm up as they cool.

Pro Tips

• Line the pan with parchment paper overhanging the edges. Lifting the entire bar out before cutting gives you cleaner squares than slicing in the pan.
• Refrigerate the cooled bar for 30 minutes before slicing for the cleanest cuts.
• Dust with powdered sugar just before serving for a bakery-style finish, but don’t dust ahead of time. The sugar absorbs into the surface and disappears.

Variations

• Substitute pecans or almonds for the walnuts.
• Add ½ cup of dried cherries or chopped dried apricots for fruit-and-nut brownies.
• Drizzle with melted white or dark chocolate for an upscale presentation.