Optional: if you want your sauce to be thicker, add some corn flour. Start with half teaspoon mixed in 1 teaspoon of cold water, and add it to your butter, before you proceed to add the other ingredients.
Lower the heat, and add the juice of one lemon.
Mix and add the fresh parsley, if you want.
Take it off the heat, and serve it on top of your protein or pasta. Buon appetito.
Notes
If you opt for the roasted garlic option, you'll need to factor in an extra 50 minutes cooking time.