Following is a list of nine places to consider for an outdoor lunch. This isn't patio dining, but rather B.Y.O.Brown paper sack with a peanut butter and jelly sandwich-type thing.
Dallas Observer: It has a cool sundial in the middle of it, plus stairs with inspirational quotes on them, if you're in the mood to be inspired. Parking is sparse, so please don't all go at once.
7171 Mountain Creek Pkwy (Long Canyon Trail), Dallas, TX
Nature Preserve · 30 tips and reviews
Dallas Observer: One of the best woodsy-outdoor escapes in Dallas County. There are picnic tables, miles of hiking trails & a nice little pond. (And poison ivy off trail, you've been warned). It's closed on Mondays.