Instructions

• In a small bowl, stir together 1/4 cup all-purpose flour, 1/4 cup brown sugar, 2 tablespoons cocoa powder, and a pinch of salt until evenly mixed.
• Add 2 tablespoons milk, 2 tablespoons vegetable oil, a splash of vanilla, and (optional) a splash of coffee extract. Stir until the batter is smooth and no dry streaks remain.
• Lightly grease a microwave-safe mug with nonstick cooking spray (optional). Pour the batter into the mug and smooth the top.
• Microwave on high for 1 to 1 1/2 minutes. The brownie is done when the top is set and not glossy; a toothpick inserted in the center should come out with moist crumbs but not raw batter.
• Let the mug brownie rest for 30 seconds to 1 minute (mug will be hot). Use oven mitts or a towel to handle the mug.
• Serve directly in the mug or invert onto a plate. Top with sweetened whipped cream if desired.