Feijoada is the national dish of Brazil that can take a day or two to make. Here's a great recipe with ingredients easily found at any supermarket. With the help of a pressure cooker, it's as good a (Butter Beans Crockpot)
Galinhada is a stew the consists of rice and chicken, which is a known dish in the Brazilian states of Minas Gerais and Goiás. This would be a great example of an authentic Brazilian dinner as it isn't too light nor is it too heavy.