Trenette with Pesto Recipe | Gourmet Pasta Dish

Ingredients

• 300 gm green beans, trimmed
• 1 large waxy potato (such as Desiree), peeled and diced
• 400 gm dried trenette (see note)
• 40 basil leaves
• 1 clove garlic
• 50 gm pine nuts (1/3 cup)
• 2 tbsp finely grated parmesan
• 1 tbsp finely grated Pecorino Sardo
• 60 ml extra-virgin olive oil (¼ cup)
• 2 tsp butter