01 - Heat olive oil in a large deep skillet or Dutch oven over medium heat. Add sliced leek and minced garlic, sauté until softened and fragrant, approximately 2 minutes.
02 - Add pasta, vegetable broth, and water to the skillet. Bring to a boil while stirring, then reduce heat to maintain a steady simmer. Cook for 8 minutes, stirring occasionally to prevent sticking.
03 - Stir in asparagus pieces, sugar snap peas, and zucchini slices. Continue cooking for 7 minutes, stirring frequently, until pasta is al dente and vegetables are tender-crisp. Most liquid should be absorbed.
04 - Add baby spinach, halved cherry tomatoes, lemon zest, lemon juice, and grated Parmesan. Cook for 2 additional minutes until spinach wilts and tomatoes are heated through.
05 - Season generously with salt and black pepper. Remove from heat and sprinkle with fresh basil or parsley. Serve hot, topped with additional Parmesan if desired.