My Favorite Grilled Sirloin Steak with Creamy Sauce Recipe

Ingredients

• 1.5 lb sirloin steak, about 1-inch thick
• 2 tbsp olive oil
• 2 tbsp soy sauce
• 1 tsp garlic powder
• 1 tsp onion powder
• 1 tsp black pepper
• 1 tsp salt
• 2 tbsp unsalted butter
• 8 oz cremini or button mushrooms, sliced
• 2 cloves garlic, minced
• 1 cup heavy cream
• 1/2 cup chicken broth (or vegetable broth)
• 1 tsp Dijon mustard
• Salt and pepper to taste
• Chopped fresh parsley (for garnish)