Slow Cooker Hungarian Goulash

Name: Slow Cooker Hungarian Goulash
Ingredients: 3 pounds beef chuck roast (cut into 1 cubes); Morton kosher salt (to taste); freshly ground pepper (to taste); 2 teaspoons vegetable oil; 5 medium carrots (peeled and sliced into 1/2 diagonals); 4 medium gold potatoes (peeled and cut into 3/4 cubes); 16 ounces whole fresh mushrooms (quartered); 1 large yellow onion (chopped); 3 large cloves garlic (minced); 4 cups low-sodium beef broth; 3 tablespoons tomato paste; 2 tablespoons Worcestershire sauce; ¼ cup Hungarian sweet paprika; ¼ cup lightly packed brown sugar; 2 teaspoon dry ground mustard; fresh chopped parsley for garnish (optional)