Sugar and Spice Steak Rub with Herb Butter

4 lb. sirloin steak, about 1 inch thick

Spice Rub:

3 teaspoon salt
3 teaspoon black pepper
1 1/2 teaspoon garlic powder
5 teaspoons sugar

Combine all and rub on sides of steak. Grill on medium hot coals for 7 minutes each side for medium. Carve into 1/4 inch slices. Serve with herb butter.

Herb Butter:

1/4 cup butter, softened
1 1/2 teaspoon fresh lemon juice
1/8 teaspoon black pepper
1 tablespoon parsley, chopped
1/4 teaspoon dried tarragon

Combine all ingredients until fluffy. Cover and refrigerate for 30 minutes before spooning over hot grilled steak.