Preheat oven at 350 degrees. Beat together eggs, butter, brown sugar, and vanilla. Add flour and baking powder and mix well. Fold in pecans and frozen chopped fresh cranberries. Pour into greased 9"x12"x4" glass pan. Bake @ 350 degrees for 40-45 minutes or until toothpick inserted in comes out clean. Serving suggestions: sifted powdered sugar on top when cake comes out of oven, or serve as a coffee cake with fruit.