In a large bowl, beat the eggs, soymilk and lemon mixture, brown sugar and oil. Combine the flour, baking powder, baking soda, cinnamon and salt; gradually add to batter until blended. Fold in the oats, blueberries and white chocolate chips if desired.

Transfer to a greased and floured 10-inch fluted tube pan. Bake at 375° for 45-50 minutes or until a toothpick inserted near the center comes out clean. Cool for 10 minutes before removing from pan to a wire rack to cool completely.

Prepare glaze by mixing confectioners sugar with water, drizzle over cake before serving.