Cheesy Taco Pasta (One-Pot Weeknight Dinner)

Ingredients

• 1 tablespoon olive oil
• 1 lb (450 g) lean ground beef, 85 to 90 percent lean
• 1 small yellow onion, diced
• 3 cloves garlic, minced
• 2 tablespoons taco seasoning
• 2 tablespoons tomato paste
• 1 can (10 oz/283 g) diced tomatoes with green chiles, undrained
• 2 3/4 cups (650 ml) low-sodium beef broth
• 12 oz (340 g) medium pasta shells or rotini
• 4 oz (115 g) cream cheese, cubed and softened
• 1 1/2 cups (170 g) shredded sharp cheddar cheese
• 1/2 cup (55 g) shredded Monterey Jack cheese
• 1/2 cup (120 g) sour cream
• 1 tablespoon fresh lime juice
• Kosher salt
• black pepper
• 2 scallions, thinly sliced
• 1/4 cup chopped fresh cilantro
• Pickled jalapenos, diced tomatoes, or crushed tortilla chips, optional