1/2 cup old-fashioned rolled oats
25 cups all-purpose flour (spooned and leveled)
1 tsp baking soda
5 tsp cornstarch (essential secret for ultra-soft, chewy centers)
1/2 tsp fine sea salt
3/4 cup packed light brown sugar (for rich moisture and caramel notes)
1/2 cup granulated sugar
1 cup cold heavy whipping cream (whipped to stiff peaks)
2 tsp pure vanilla extract
1 cup semi-sweet or white chocolate chips
3/4 cup seedless raisins