how long to roast tomatoes and jalapenos
1 In a medium baking dish, place roma (plum) tomatoes, garlic, onion and jalapeno chile pepper. Drizzle with olive oil. 2  Checking often, broil 5 to 10 minutes, or until outsides of vegetables are charred.  Remove vegetables from heat. Remove and discard tomato cores, jalapeno stem and garlic skins.