Stir The Water, Milk, And Quinoa Together In A Saucepan; Bring To A Gentle Boil. Reduce Heat To Low And Simmer 5 Minutes, Or Until The Quinoa Begins To Soften. Stir In The Banana, Rolled Oats, Oat Bran, Salt, And Cinnamon. Cook, Stirring Frequently Over Low Heat For 2 To 5 Minutes Or Until The Mixture Thickens. Remove From The Heat And Stir In The Walnuts, Brown Sugar, And Vanilla.