Hard to find but here are some suggestions http://www.urbanspoon.com/n/32/12407/Cincinnati/Middletown-restaurants
Triple D Grade
Grecian Delight 1300 Cincinnati Dayton Rd, Ste B, Middletown, OH 45044-8935 http://www.greciandelightmiddletown.com/ Some say Triple D grade but I am on the fence. Good food, feels like eating in the school lunch room. Limited menu.
Veracruz Mexican Restaurant http://www.tripadvisor.com/Restaurant_Review-g50654-d1816929-Reviews-Veracruz_Mexican_Restaurant-Middletown_Ohio.html Great little Mexican restaurant – best chips and salsa to date! Menu is same Americanized Mexican fare, and serves as a Latin dance hall at night. Seating feels strange since you are sitting in the bar. Prices are as expected and service was fair.
Suggested but not tested
Stefano’s Italian Café (broken link to site- fixed?) http://www.stefanositaliancafe.com/ but here is more http://www.tripadvisor.com/Restaurant_Review-g50654-d394962-Reviews-Stefano_s_Italian_Cafe-Middletown_Ohio.html