Process the ingredients to be blended in a high speed blender until smooth.
Combine the dry ingredients in a bowl.
Add the blended ingredients to the dry ingredient bowl and stir until just combined.
Coat an 8x8 or 9x9 baking pan with oil spray. Pour batter into pan.
In a small microwave safe bowl, warm 1/4 cup of vegan caramel sauce with 2 tbsp of oat milk for 30 seconds. Stir and drizzle over the top of the brownies before baking.
Bake at 350 degrees F for 35 minutes or until a cake tester comes out clean.
Allow to cool completely before cutting. Store in refrigerator.