First, make the butter compound ahead of time. Mix all the prepared butter compound ingredients together in a bowl until it is well combined.
Spoon the softened mixture in a log shape in a long sheet of plastic wrap.
Close the butter compound up by rolling the ends together and twisting the edges to create a butter log.
Refrigerate for a few hours until it hardens. I left mine overnight.
Next, you will need to create the Roasted Garlic Aioli. YUM!
I purchased already roasted garlic cloves for this but you can roast your own in the oven too.
Combine all the Garlic Aioli ingredients in a food processor and blend it on high until all the ingredients become smooth.
Now, separate the 80/20 ground beef into 4 separate hamburger patties.
Place a large slice of the seasoned compound butter inside each of the burgers (as shown in the photos below).
I love to use a cast iron skillet to cook these burgers up because the beef tastes absolutely amazing (yes, there is a difference). Place another large slice of seasoned compound butter on the top of each burger while it's cooking.
Once the burgers are done, add a slice of your favorite cheese on top and serve warm! YUMMY!