Cut plantains in half (so pieces can become thinner)
Place the condensed milk, eggs and flour in a blender until combined
In a rectangular 15x7 baking dish arrange a layer of plantains, sprinkle the panela or brown sugar, half of the cheese and half of the milk mixture. Repeat with the second layer
Bake for 45-50 minutes until top is brown
Remove from oven and wait for 10 minutes before cutting