Black Walnut Cafe Share: RestaurantsCateringBar Black Walnut Cafe Visit Website 775 N. Denton Tap Rd. Coppell, TX 75019 (972) 459-9790 About Map About Contemporary American fast casual concept. Whether you want an eggs benedict, coffee, dessert, martini, a hand crafted sandwich, certified Angus pot roast or an Asian tuna salad, we have it all. What's Nearby? Distance: 5 10 15 20 25 50 mi.