Keto Salisbury Steak with Onion Gravy (Low Carb)

Ingredients

• 2 pounds ground beef
• 1 egg (beaten)
• 1/2 cup pork rinds (finely ground)
• 1/4 cup fresh parsley
• 1/4 cup heavy cream
• 2 tbsp Worcestershire sauce
• 1 tsp garlic powder
• 1 tbsp dried onion flakes
• 1 tsp salt
• 1/4 tsp pepper
• 2 tbsp avocado oil
• 1 tbsp butter
• 1 cup onion (sliced)
• 2 cups beef bone broth
• 1/4 tsp salt
• 1/2 tsp glucomannan powder