Osia Steak & Seafood Grill. Located at 26 Sentosa Gateway, Festive Walk, #02-140/141, Singapore 098138. 1 Michelin Star ️ Restaurant. Osia’s speciality – stone hearth oven flatbread ($14). Comes in 4 toppings and you can choose up to 2 toppings for the same price! Left: Macadamia & Basil Pesto | Right: Garlic Butter & Parmesan. 3 dips: Olive Oil, Butter and their homemade Bush Tomato. This is one of the BEST Flatbread, so far I’ve never eaten any flatbread better than theirs. It is so flavourful, generous toppings, the toppings are well infused into the bread, bread is oven-baked to perfection and you just can’t stop dipping into the dips and into your mouth!! Best Flatbread! @osiarestaurant @rwsdiningartisans @rwsentosa #hungryunicornsg #osiarestaurant #flatbread #flatbreads #osiasteakandseafoodgrill