One-pot Beef Stroganoff

Ingredients

• 1 lb lean ground beef, (I use 90% lean ground sirloin)
• 2 T unsalted butter
• 1 lb mushrooms
• ½ onion, diced
• 2-3 garlic cloves, minced
• ½ tsp salt, more or less to taste
• ½ tsp pepper
• 1 oz cream cheese
• 3 3½ c beef broth, low sodium if possible, stock will also work
• ⅓ c sour cream, more as desired
• 2 tsp Worcestershire sauce
• 1½ tsp Dijon mustard
• 1 tsp fresh thyme, or ½ tsp dried thyme
• 1 tsp fresh parsley, more to top, optional