Place refried beans in a large(r) bowl. Crumble the crackers (or scatter the breadcrumbs) over the top of the beans, then unpeel and de-pit the avocado, placing all that green goodness over the top. Add the turkey meat, a dollop of mayo, and a generous shake of each of the seasonings you are using. If your child is around or over one year of age, add a splash of soy sauce, too.
Mash the ingredients with your hands or a spoon so that the avocado is broken up and mixed in and everything is all melded together–you should have a light pink mix with a look and texture not unlike tuna fish salad. Place in the fridge for at least 30 minutes to cohere.
Heat a large pan w/cooking oil to Medium High. When the pan is hot, place a large spoonful of the meat mixture into the pan and spread so that it forms a patty shape; repeat until the pan is full but meat is not touching, roughly about 4-5 patties. Swish the oil around the pan and smash the patties down with a spatula to flatten.
Cook for two minutes, smashing repeatedly; flip, then cook for another two minutes--smashing once or twice--until golden brown on both sides.
For an infant, spritz with a bit of lime, and cut into quarters to cool down. For a toddler, place patty on a bun, and cut down size of bun or patty to match the right portion size for your child; place favored condiments on top of patty and smash the top bun onto the whole thing to compress. Serve with veggie tots or small wedges of roasted potatoes.
Lots of ways to adapt this one as your child grows. The obvious one: as your kiddo’s teeth come in and his/her ability to eat heftier and more textured food increases, you can decrease the mayo and/or avocado to create a firmer patty. In the meantime, you can also swap out about half the mayo and add in cauliflower rice (whatever I have left over in a bag from other uses)--same moistness, less fat. You can use this recipe to introduce the rest of the burger lexicon: buns, cheese, condiments, etc. Heck, swap out the bird: replace the turkey with ground chicken!
Don't want to use refried beans? Sure. Just use 1/4th of a can of no-sodium black beans. Rinse and dry the black beans and heat in a small pot on Low until warm. Remove from heat, drain excess liquid from the beans. When cool, place in a large bowl and smash them until flat and paste-like; mix in remaining ingredients as listed in the instructions. You may need to add a little more mayonnaise than listed to compensate for the lack of the lard in the refried beans.
** You can make a crispier/smashier burger by cooking at High heat for two minutes a side--just know your pan will need to be oiled up throughout the cook in order to avoid the burger sticking to the pan.