Homemade Salisbury Steak

Ingredients

• 1 lb. (450g) ground lean beef
• 1 green pepper, finely chopped
• ¼ cup (30g) gluten-free breadcrumbs (or almond flour for low-carb)
• 1 egg
• 2 tsp. tomato ketchup
• 1 tsp. Dijon mustard
• ½ tsp. dried parsley
• ½ tsp. onion powder
• ¼ tsp. salt
• 1 tsp. olive oil
• 2 tbsp. dairy-free butter (e.g., Miyoko’s or coconut oil)
• 2 tbsp. gluten-free flour (e.g., cassava, rice, or almond flour)
• 1½ cups (350ml) beef broth
• 1 tsp. tomato ketchup
• 1 tsp. coconut aminos
• 3 cups (250g) brown button mushrooms, sliced