Step 1

In a mixing bowl, combine the masa harina and salt. Stir in warm water to form a dough. Knead the dough several minutes until it becomes smooth and pliable. If the dough is too dry, add a little more water; if it's too sticky, add a bit more masa harina.

Step 2

Divide the dough into golf ball-sized portions. Cover with a damp cloth to prevent drying.

Step 3

Flatten each dough ball to form a 1/4 inch thick patty. Place 1-2 tablespoons of shredded cheese (or beans, meat, or combo) in the center of the masa patty.

Step 4

Fold the edges of the dough over the filling, then seal to form a ball again. Flatten each stuffed dough balls to form thick tortillas.

Step 5

Heat the vegetable oil in a pan to medium-high heat. Cook the pupusas 2-3 minutes per side, until they turn golden brown. Use a spatula to help them cook evenly.

Step 6

Serve warm with curtido (pickled cabbage slaw).