This is one of my favorite things Sean will cook for me. Well, he used to cook it, until I learned how 
Since there isn’t a real recipe, it took me a bit to learn. All my cooking experience comes from baking, where you have to follow a recipe closely. Cooking is more abstract, and I’m starting to ‘get it’. Of course the more you cook, the easier it gets
Brown onion, pepper and beef add the rest (including reserved liquid) except for beans simmer 1 hour, add beans simmer 1/2 hour more.
Simple, get a pound+ of ground beef (I like more than a pound, about 1.25lb) Brown in frying pan, add burrito seasoning. We use El Rio, hard to find but good. If you can’t find, Taco seasoning works. Follow instructions on package. When it starts to boil add 1/2 a can of refried beans, stir in and make smooth. Cook for ten minutes (per instructions) this helps the filling get firm. Pre heat oven to 350
Get Burrito size flour tortilla, spoon about 3-4 tablespoons in the lower half and roll once, fold in the sides and finish rolling. Continue until finished with mixture. Put in pan, cover with salsa and put in oven for about 6 minutes, remove and cover with cheese (Mexican mix)
Set oven to broil. Meanwhile chop some lettuce, green onions, whatever other toppings you want. Place cheese covered burritos in oven and watch the cheese melt, remove when ever you feel the cheese is the way you like it. Me, I like to let it get brown edges.
Remove and serve with sour cream (Yum), guacamole is good also, lettuce and onions.