Slow-Cooker Pot Roast - Miz En Place

Ingredients

• 3 pounds boneless chuck roast
• 3 tsp kosher salt, divided
• 1-1/2 tsp black pepper, divided
• 2 pounds large red potatoes, quartered
• 1 pound carrots, peeled and cut diagonally into 2-in. pieces
• 4 ounces celery stalks, cut diagonally into 2-in. pieces
• 1 large yellow onion, cut into 3/4-in.-thick wedges
• 1 tbsp minced garlic
• 2 cups beef broth
• 5 tbsp all-purpose flour
• 1 tbsp tomato paste
• 6 thyme sprigs
• 1/4 cup Worcestershire sauce
• 3 tbsp ketchup
• 2 tsp hot sauce