Indulge in these incredibly soft and chewy cookies bursting with the nutty flavor of brown butter and loaded with Oreos, M&Ms, and chocolate chips.
Do not overmix the dough once flour is added to ensure tender cookies.
Chilling the dough is crucial for flavor and to prevent excessive spreading.
Bake until the edges are just set; the centers will continue to cook as they cool.
For extra chewiness, add the optional tablespoon of cornstarch.