First, prepare all your ingredients and set up an assembly line. Start by cooking and shredding the chicken if you have not already done so. Warm the cooked rice and the beans separately in small saucepans over medium heat until heated through. If you like, you can season the rice with a little lime juice, cumin, or chopped cilantro to boost the flavor even more.

Next, warm the flour tortillas. You can do this by placing them one at a time in a dry skillet over medium heat for about 30 seconds per side until soft and pliable. Alternatively, you can wrap a stack of tortillas in foil and warm them in a 350°F (175°C) oven for about 10 minutes.

Now it is time to assemble. Place a warm tortilla flat on a clean surface. Spread a spoonful of refried beans down the center, leaving a little space at the edges for easier rolling. Add a layer of cooked rice, followed by a generous scoop of shredded chicken. Sprinkle a handful of shredded cheese on top, then add shredded lettuce and diced tomatoes. Finally, dollop sour cream or guacamole across the top.

Fold the sides of the tortilla inward over the filling, then roll it up tightly from the bottom to form a burrito. If you like, you can wrap the burrito in foil to help it hold its shape or lightly grill it in a skillet for a few minutes to seal and crisp the outside. Repeat the process with the remaining tortillas and fillings until all the ingredients are used.