Freshly ground black pepper
Kosher salt
4 oz. Cream cheese, cubed
1 pound Spaghetti
1/4 cup Low-sodium vegetable stock or water
2 tbsp. Butter
2 cloves Garlic, chopped
1 Small yellow onion, chopped
1/4 cup Packed cilantro leaves, plus more for garnish
4 Large poblano peppers