My Grandmother's Easy Slow Cooker Beef with Rich

Ingredients

• 2 pounds beef chuck roast, trimmed and cut into 1-inch cubes
• 1 tablespoon olive oil
• 1 medium onion, chopped
• 3 cloves garlic, minced
• 1 can crushed tomatoes (28 ounces)
• 2 tablespoons tomato paste
• 1 cup beef broth
• 1 tablespoon Worcestershire sauce
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1 teaspoon sugar
• Salt and black pepper to taste
• Fresh basil leaves for garnish
• Grated Parmesan cheese (optional)