Add all spices to a mixing bowl.
Whisk until fully combined with no clumps.
Use a funnel to pour into a jar.
Label jar with Longhorn Steak Seasoning Recipe.
Store in a cool, dark place until needed.
Pat steaks dry before using seasoning on them.
Sprinkle seasoning generously on both steak sides.
Let steaks sit with seasoning for 30 minutes.
Heat grill pan on medium-high for searing.
Cook steak 4 minutes each side for medium.
Let steak rest for 5 minutes before serving.
Enjoy the steak with the Longhorn Steak Seasoning Recipe.