Rhubarb brownies combine rich fudgy chocolate and brown butter batter with bits of fresh rhubarb. It may sounds like a strange combination, but trust me it works!
Gently cook ½ cup butter over medium-low heat until it starts to get a light golden color. Stir frequently once it starts taking on color to avoid scorching it. Remove from heat.
Meanwhile, grease an 8-inch square baking dish and preheat the oven to 350°F.
In a small bowl, stir together the 1 cup light brown sugar, 1 cup all purpose flour, ½ teaspoon baking powder and ¼ cup cocoa powder.
Stir 1 egg and 2 Tablespoons milk into the browned better. Then stir in the dry ingredients until just combined.
Fold in the ¾ cup chopped rhubarb.
Spoon into prepared pan and bake for 20-25 minutes or until set.