Preheat oven to 350℉ (180℃) F. Coat 2 baking sheets with cooking spray. Grind oats in a blender or food processor. Transfer to a medium bowl and stir in flour, baking soda and salt. Beat butter in a large bowl with an electric mixer until fluffy. Add oil, granulated sugar, brown sugar, egg and vanilla; beat until smooth and creamy. With the mixer running, add the dry ingredients, beating on low speed until just combined. Stir in chocolate chips. Drop the dough by heaping teaspoonfuls, at least 1 inch apart, onto the prepared baking sheets. Make about 2½ dozens cookies. Bake cookies, 1 sheet at a time, until firm around the edges and golden on top, about 15 minutes. Cool the cookies for 2 minutes on the baking sheets, then transfer to wire racks to cool completely. Keep in air-tight container.