When I was little, burritos were my favorite food. At least, my mom's version (very similar to the Not-very-fancy version) of burritos were my favorite food. I was actually referred to by some as the "burrito mosquito." I'm not sure why my mom didn't make them more often since they are so easy! These are not intended to be authentic, so don't judge!
My usual ingredients are:
I just brown the turkey with onion, put stuff in bowls, heat the refried beans, warm the tortillas and serve. Everyone builds their own. One time I didn't have the refried beans or fresh tomato, so I used a can of pinto beans (rinsed) and a can of diced tomatoes (drained). I mixed everything together in one bowl (except the meat because my kids are picky!). It worked beautifully. I should probably do it that way more often.
I do not like using taco seasoning packets, so I make my own. I used this recipe until I felt comfortable just sprinkling stuff in. Now I use approximately 2 teaspoons of chili powder, 1 teaspoon of cumin, 1/4 teaspoon of oregano, salt, pepper, and garlic powder.
My little girl can't really manage holding or eating a whole burrito. I'm a little embarrassed by how long it took me to realize I could just make a whole burrito and cut it in half. I guess it's because I usually fold mine so they are open at one end. Anyway, here's my quick tip about making burritos manageable for your preschoolers.
A couple more tips for simplifying this already very simple meal. Buy a bunch of onions, dice, and freeze. Take the meat you prepared and freeze half of it, then it will be ready to go next time.