Brownie dessert

Photo: Nicolas Mccomber/Hemera/Thinkstock

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Mistake #5: Giving in to the Insanely Good Scent
Every chef we talked to agreed that as delicious as a hot brownie smells, it will actually taste better once it's been out of the oven for a few hours—and it'll be at its peak tastiness—with the richest, most developed flavor—after a day. If you're building a sundae, Knipschildt says definitely don't microwave the brownie before scooping ice cream on top (room temperature is best). If you do, the base will taste good for the first minute or two, but as soon as it cools, it'll turn dry and crumbly, since the appliance tends to suck the moisture out of baked goods.