Hearty Bell Pepper Pasta - Serving Dumplings

Ingredients

• 11 ounces penne
• 2 yellow bell peppers (deseeded and cut into thin strips)
• 2 red bell peppers (deseeded and cut into thin strips)
• 3 tbsp olive oil
• 1 tbsp unsalted butter
• 4 garlic cloves (minced)
• 1 shallot (finely sliced)
• 1 tsp dried thyme
• 1 tsp sweet paprika
• 1 tsp salt
• 1 tsp black pepper
• 1 tsp crushed red chili flakes
• 1 cup chicken broth (or vegetable broth)
• 5 tbsp tomato paste
• 20 basil leaves
• grated Parmesan (for serving, optional)
• 2 tbsp chopped pistachios (for serving, optional)