Savory Beef Stew & Couscous with Roasted Vegetables

Ingredients

• 2 1/2 tbsp olive oil, divided
• 1 3/4 lbs stew beef, cut into 1-inch pieces
• 3 cloves garlic, minced
• 3/4 tsp black pepper
• 1 (14.5oz) can beef broth
• 2 tsp dried thyme
• non-stick cooking spray
• 12 medium mushrooms
• 6 plum tomatoes, quartered, seeded
• 3 small onions, quartered
• 3 1/2 tbsp balsamic vinegar, divided
• 1 tbsp cornstarch
• 2 tbsp water
• 2 cups RiceSelect® Couscous