Beef Stroganoff

Ingredients

• 4 None carrots, chopped
• 2 stalks celery, halved
• 1 None onion, peeled and quartered
• 1 (5 lb) bottom round beef roast, at room temperature
• 1 tbsp herb seasoning mix
• 3 tbsp butter
• 1/2 cup chopped shallot
• 10 oz mushrooms, chopped
• 1 tsp Dijon mustard
• 1 tsp tomato paste
• 2 tbsp flour
• 1 1/2 cups beef broth
• 2 tsp chopped fresh parsley
• 2 tsp chopped fresh oregano
• 1/2 cup plain Greek yogurt