Some good-halal restaurants in Singapore:
Al Azhar (Bukit Timah)
Spize (River Valley)
Tang Tea House (Simpang Bedok)
Thohiroh (Jalan Kayu)
Khansama (Science Park & Near Mustafa)
Anjappar (Next to Mustafa)
Kebab n Curry (Roof top Resto@Mustafa)
Maimunah (Geylang)
Garuda Sakura (Far East)