Bilingual readers are some of my favorite books in the world right now, at least when it comes to teaching mija Spanish. While I'll definitely read whatever I'm personally reading to her from time to time, I prefer choosing one of the books that I'll soon be able to read to her and have her actively engage me with. The Very Hungry Caterpillar is a great example, especially in board book form, since it's a classic and definitely kid-approved.
The story details a little caterpillar who goes about eating various foods over the course of a week. Beyond teaching the life cycle of the butterfly, you can also use it to teach the days of the week, counting from 1-5, and a range of food vocabulary. The re-readability is high, and I'd highly recommend the book in its bilingual form, or simply in English.
Personally, I learned a lot of food vocabulary, including ciruelas and bizcocho de chocolate.
Mija appears to enjoy the book, although, being only 8 weeks old at this point, it's a little hard to tell how she'll feel about it in a year. It's modestly priced online at around $9 at Amazon and available for free in your local public library.