Pour can of beans into large bowl
Dice whole tomato and quarter of an onion
Combine the tomato and onion with the beans in large bowl
Add a quarter of the half lemon (juiced) into the bowl
Add salt and pepper into bowl to taste (personal preference); then mix
Cut the avocado & remove seed~ TIP: I like to peel my avocados... as it helps keep many of the beneficial nutrients
After peeling or scooping; mash the avocado in small bowl (since all the other ingredients add a good blend of flavors; plain mashed avocado will suffice unless you'd like to add some extra salt/pepper or lemon juice)
Set aside and preheat oven to 350℉
Once preheating, make sure you have your sheet pan with tin foil over it
Place the tortillas onto the sheet pan once ready; with this put olive oil in small bowl or container and use silicone brush to brush over both sides of the tortilla (I also like to garnish the oiled tortillas with some sort of seasoning; I use oregano)
With that, pop the tortillas in the oven for about 3 minutes; then take them out and flip them and put them in for another 2 minutes or so
Then to add that extra crunch, but the oven on broil for about 1:30 minutes (but no longer!)
They should come out looking crunchy and toasty~ make sure to turn off the oven
Place 2 handfuls of cheese or whatever desired amount you would like upon each tortilla
Place 2-3 large spoonfuls of bean mixture to each tortilla
Then set aside; prepare greased pan and cover and place one soon to be delicious quesadilla/taco inside. Cook on low heat for around 5 minutes till you can see the cheese has melted. Once cheese has melted and you've achieved that gooey look, remove from heat and put on plate.
Then voilá! All you need are the finishing touches of lemon juice and my personal favorite, Cholula hot sauce!