Line an 8x8 square baking pan with tin foil and lightly grease. Set aside. Place softened coconut oil and sugar in a stand mixer OR in a large bowl with a handheld electric mixer. Beat on medium speed about 2 minutes or until evenly creamed. Mix in egg, cream, and vanilla until creamy.
In a large bowl, combine flour, cornstarch, cinnamon, and salt. Add flour mixture to liquid, and beat on medium speed until a dough forms (dough will be very thick) Mix in chocolate chips.
Press dough evenly into bottom of prepared pan. Cover pan with plastic wrap and chill 30 minutes until dough is firm.
Bake cookie bars at 350F 18-20 minutes or until edges are just golden (middle will still be slightly soft-this is ok) Cool cookie bars on a wire cooling rack completely. Once cooled, cut into squares and enjoy!