In a medium bowl, combine the beef, celery seed, salt, garlic powder, and pepper. Toss until the meat is evenly coated.
1 lb. (450 g) beef (preferably boneless ribeye or boneless sirloin steak), 1 tsp. (1.3 g) celery seed, 1 tsp. (6 g) table salt, 1 tsp. (3.1 g) garlic powder, 1/2 tsp. (1.2 g) finely ground black pepper
Add the flour and mix again until the beef is fully dredged.
1/4 cup (30 g) all-purpose flour
In a 12-inch skillet over medium heat, melt the butter and add the beef. Cook until browned on all sides, then remove from the pan and set aside.
2 tbsps. (28 g) butter
Add the onion and mushrooms to the same pan and sauté for 2 minutes.
1/2 cup (75 g) finely chopped yellow onion , 2 cups (140 g) white button mushrooms
Deglaze the pan with the bourbon, scraping up any browned bits.
1/4 cup (60 ml) bourbon
Pour in the beef broth and continue scraping the bottom of the pan.
1 cups (240 ml) low-sodium beef broth
Return the beef to the skillet and bring the mixture to a boil.
Stir in the heavy cream, reduce the heat to a low simmer, and cook for 7–10 minutes, stirring occasionally, until the sauce thickens.
1 cup (240 ml) heavy cream
Serve over rice, egg noodles, mashed potatoes, or pasta.