Just mix this together, then roll up (as you would slice and bake cookies) and keep wrapped in plastic wrap and foil in the freezer. When you want to use it take it out of the freezer about 20 minutes earlier. Slice off what you need.
1/2 cup softened butter
1-2 tbsps parsley
1/2 tsp garlic powder
1/2 tsp thyme
zest of lemon
You could use any herbs you like really....oregano, sage, rosemary, etc
It was soooo good on steak. When your steak is cooked give it a squeeze of fresh lemon and top with a slice of herbed butter.