You can use your favorite homemade brownie recipe here, but this is so simple, and so wonderful. Pecan pie, move over.
Preheat oven to 350 degrees F. Spray an 11x8-inch glass casserole dish with nonstick spray; set aside. Prepare brownie mix according to package directions (the “fudge brownie” variation). Pour into pan and spread evenly.
Bake 20 minutes, or until a crust forms on the surface; crust will be firmer around the edges. Remove from oven; slowly ladle Best Pecan Pie filling over brownies. Return to oven; bake 20 to 25 minutes longer, or until pecan mixture stops jiggling in the center. Cool completely.