Alegria is our go-to place for fast and flavorful foot in Katy. The meats are always flavorful and the 3 sides are generous and tasty. The picanha (steak) and chicken are particular favorites with the kids liking the grilled pineapple and plantain sides. I also like the cheese bread and - occasionally - really enjoy their desserts as well (particularly the flan). The prices are good and since it is semi-cafeteria style, the food is fast.
Overall, very good fast Brazilian