Cut the plantains the length and width of two adult fingers put together, to minimize choking risk. Grease a pan with avocado oil and cook the plantains until they're soft and golden brown from all sides.
Toast the bread until it's golden. The more you toast the bread, the more you reduce the choking hazard, as soft bread can become gummy in a baby's mouth.
For the full step-by-step instructions and video tutorial, download the Little Lunches app.