Brush 1 side of each of 2 tortillas with water. Press the wet sides of the tortillas
together to form a thick crust for the pizza. Brush the outside of the tortillas with
a small amount of vegetable oil. Evenly brown both sides in a heated frying pan. Repeat
with the rest of the tortillas. Set aside.
Heat refried beans, chopped onion, and half of the diced chili peppers together in
a medium saucepan, stirring occasionally. Remove from heat.
Spread about 1/3 cup of the bean
mixture on each tortilla pizza. Sprinkle each pizza with 1 tablespoon taco sauce,
top with 1/2 cup chopped vegetables, 1 teaspoon of diced chili peppers (if desired),
1 tablespoon of shredded cheese.
Return to frying pan and heat until cheese melts. Serve immediately.