Spray 15 by 10 baking dish with nonstick. Combine the oats, 1 and 1/2 cups of the flour, brown sugar and baking soda. Add butter; mix until crumbly. Set aside 1 cup of oatmeal mixture. Press remaining amount of oatmeal mixture into and even layer on bottom of baking dish. Bake for 15 minutes.
Combine caramel topping and remaining 1/4 cup flour in a small bowl and whisk until smooth. Drizzle over oatmeal crust; carefully spread to edges.
Combine pecans and remaining crumb mixture. Sprinkle over caramel layer. Then evenly sprinkle mixture with mini chocolate chips. Bake 15 to 18 minutes or until golden and bubbly.