Monday, January 25, 2021 Insider New Mooyah restaurant opening in April on Bluebonnet By Holly Duchmann - January 25, 2021 FacebookTwitterLinkedinEmailPrint (iStock photo) The franchise owners of Mooyah Burgers, Fries and Shakes on Siegen Lane are looking to open a second location—this one on Bluebonnet Boulevard—in April. Already an INSIDER? Sign in.