Crossroads Diner opened Jan. 30 in Plano. (Courtesy Crossroads Diner) Crossroads Diner opened Jan. 30 in Heritage Creekside, according to a company representative. The restaurant serves breakfast and lunch, and will soon serve dinner, the website states. The breakfast menu includes sticky buns, fritattas, pancakes and more. The lunch menu features a crispy fried chicken and warm brie cheese sandwich, build-your-own burger, salads and more…