Slice the onion into small rings.
Place a large skillet on the stove and turn the heat to medium-high.
Add 1 tablespoon of butter and allow it to melt.
Add the onions and sauté until translucent.
Get about 1/2 of the onions and set them aside.
Put the slices of bread into a food processor and pulse until they become bread crumbs.
In a large mixing bowl, add the onions, ground beef, breadcrumbs, seasonings, and eggs. Stir until just mixed.
Form patties out of the mixture.
In the same skillet, add more butter and allow it to melt.
Add the beef patties and sear on both sides until brown.
Remove the seared patties from the skillet and remove any excess grease.
In a mixing bowl, add flour and beef broth. Stir until well blended.
Add the mixture into the same skillet as well as the heavy whipping cream, butter, and Worcestershire sauce. Stir until well combined.
Put the seared patties and sauteed onion rings back to the skillet. Cook for another 15 minutes or until done.
Add garlic powder, onion powder, and pepper. Stir until well mixed.
Serve hot over rice or mashed potatoes. Enjoy!