1. Preheat your oven to 400°F (200°C). Roast halved red bell peppers, quartered onion, and garlic cloves drizzled with olive oil for 25-30 minutes.
2. Cook pasta according to package instructions until al dente, then drain.
3. Transfer roasted vegetables to a blender with chicken broth, flour, chipotle chili powder, cumin, smoked paprika, and pepper. Blend until smooth.
4. In a skillet over medium heat, pour in the blended sauce. Add cream cheese and stir until melted.
5. Stir in black beans and fresh spinach, cooking until spinach wilts, about 2-3 minutes.
6. Add cooked pasta to skillet and toss until well coated in sauce. Add more broth if the sauce is too thick.
7. Serve warm, garnished with cilantro if desired.