Preheat oven to 350 degreesLightly spray a 2 qt casserole dish or 8x8 baking panIn a large bowl, add dry ingredients-oats, baking powder, salt and cinnamonIn another bowl, combine wet ingredients-yogurt, honey, milk, egg and vanillaCombine both mixtures, then stir in blueberries until blendedPour into prepared panPlace dish in ovenCover with cookie sheet or foil and bake for 20 minutesRemove cover or foil and bake another 20 minutes or until center is setServe warm with more yogurt or milk