Slow Cooker Caribbean Pot Roast

• 1 tablespoon vegetable oil
• 5 pound boneless beef chuck roast
• 2 tablespoons flour
• 1 teaspoon kosher salt
• 1/2 teaspoon coarse ground black pepper
• 2 medium sweet potatoes , peeled and cut into 2" chunks
• 3 large carrots , peeled and cut into 2" chunks
• 1 large onion , chopped
• 3 cloves garlic , minced

Pot Roast Gravy Ingredients

• 15 ounces tomato sauce
• 1 large orange , juiced and zested
• 2 tablespoons brown sugar , packed
• 2 teaspoons dried oregano
• 2 teaspoons cumin
• 1 teaspoon Coriander
• 1 teaspoon chili powder
• 1 teaspoon unsweetened cocoa powder
• 1/2 teaspoon ground cinnamon