The bottom of this post also contains recipe card with ingredients and full instructions.
2 Tablespoons olive oil
1 ½ lbs. ground beef, 85% lean
6 Tablespoons frozen butter, (3/4 stick) -This is the key to this recipe.
½ cup yellow onion, finely minced
2 teaspoons yellow mustard
3 teaspoons Worcestershire sauce
3 cloves garlic, minced
2 yellow onions, sliced into ¾ inch strings
3 Tablespoons cold unsalted butter, separated
1 cup chicken broth
1 cup beef broth
1 teaspoon onion powder
½ teaspoon garlic powder
1 ½ teaspoons Worcestershire sauce
1/4 cup cold water + 3 tablespoons corn starch
How to Make It
Combine the hamburger steak ingredients and form into oval steaks. Refrigerate for 10 minutes and season with salt and pepper.
Heat in olive oil over medium-high heat for 4 minutes/side. Remove and set aside.
Hamburger Steak patties before and after cooking.
Add 2 Tablespoons butter to the pot and soften onions. Add brown gravy ingredients and stir to combine. Bring to a boil, reduce to a simmer. Whisk in cornstarch + cold water.
Onions cooking in a pan to make brown gravy with onions.
Add the patties back to the pan and spoon onion gravy over the top. Cover and cook over medium heat for 10 minutes, or until cooked through, the internal temperature should be 160°.
Swirl in the remaining 1 TBS cold butter at the end. This is a chef-inspired finishing technique that adds a velvety finish to the gravy.
Serve over mashed potatoes!