Preheat oven to 350 degrees F.
Mix the flour, oats, 1/2 cup sugar, 1/2 cup brown sugar, soda, and salt until well combined. Add the butter and cut in with a fork, pastry cutter, or by hand until everything is combined and crumble is formed.
Reserve 1 3/4 cups of the crumble for the top of the bars. The rest of the crumble pat into a greased 9 by 13-inch baking pan. Place into a preheated oven and bake for 10 minutes.
While the bars are baking place the cream cheese in a medium bowl and beat with an electric mixer until it is creamy add the 1/3 cup of sugar, egg, and vanilla and mix in.
Cut the peach into small pieces and mix with the blueberries. Add the 1/4 cup sugar and 2 tablespoons of flour, toss until well mixed.
Add the pecans to the reserved crumble. Once the crust has baked for 10 minutes remove from the oven. Spread the cream cheese mixture over the top of the crust.
Evenly spread the fruit over the cream cheese. Sprinkle the crumble over the fruit. Place bake in the oven and bake for another 30 minutes. Remove from the oven and set on the cooling rack to cool.