Slow Cooker Beef Short Ribs

WHAT YOU'LL NEED

• 4 lbs. (2 kgs) beef short ribs, trimmed of fat
• 1 large onion, sliced
• 5 large carrots, cut into 2-in (5 cm) pieces
• 2 cloves garlic, chopped
• 1 tsp. (5 mL) dried thyme leaves
• 1 package Knorr® Brown Classic Roast Gravy Mix
• 1 cup (250 mL) PLUS 2 Tbsp (30 mL) water, divided
• 2 Tbsp. (30 mL) all-purpose flour