Preheat oven to 375° and grease an 8 X 8 glass dish with oil.
To make filling: In a small saucepan, heat the blueberries, honey and pomegranate juice over medium-high heat until it comes to a boil. Once boiling, stir in vanilla and cornstarch/water paste. Continue to stir until filling thickens, about 2-3 minutes. Remove from heat.
To make batter: In a food processor, pulse half the oatmeal (1 1/2 cups) until it becomes a course flour. In a medium mixing bowl, combine ground oatmeal, remaining oatmeal, cinnamon, baking powder and salt. Stir in the applesauce, honey, water and vanilla extract; mix well.
Spread about half of the batter in the oiled glass dish, making sure the bottom layer is even and covering the entire bottom of the dish.
Next, spoon the blueberry filling over the batter followed by the remaining half of the batter, trying to smooth the top batter layer as evenly as possible.
Bake for approximately 30 minutes until lightly brown on top. Allow to cool for 20-30 minutes (if you can wait that long), then cut into 12 squares.