Preheat oven to 375 degrees. Grease and line a 5x7-inch casserole dish or 4x8-inch loaf with parchment paper.
Heat together chocolate, butter, sugar in a small saucepan over low heat until chocolate and butter melts and sugar dissolves, about 3 minutes. Set aside to cool for several minutes before adding to a small mixing bowl. Stir egg and vanilla into cooled chocolate mixture.
Whisk together flour and baking powder. Add to chocolate mixture. Stir in cranberries and pecans.
Transfer mixture to prepared pan. Spread out evenly. Bake at 375 for about 15 minutes until brownies are set and inserted toothpick comes out clean. Cool pan on wire rack for about 15 minutes before removing brownies, still on paper from pan to finish cooling. Cut brownies into desired sizes.