The Oark General store. Good Burgers, and Great pie. It also happens to be near the intersection of 103 and 215, both of which are great roads.
215 intersects with HW 23 (The Pig Trail)...another great ride.
Jasper...the Ozark Café.....or, head NE from there and eat at the Low Gap Café...neat little joint.
While in the area of Jasper, make sure you hit HW 123 near Mt. Judea.
Push Mountain Road (HW341) is about 80ish miles east of Eureka Springs, near Mountain Home and Salesville is a great ride, as it HW 9, which runs westerly out of Melbourne, Ar.
The list of great roads in NW Arkansas cannot all be ridden in just two days.....