If you don’t want to make the guacamole fresh from scratch, you can use pre-made or store-bought guacamole. Feel free to simply slice avocado directly into the burrito. Avocado (in whatever form) is a crux of the California burrito.
If you lay your tortilla directly onto a gas burner, be very cautious to ensure that it doesn’t catch fire. Do not leave the stove until there’s nothing over the flame.
Repeat as needed to make more burritos. At this point, you can serve them right away or toast them in a pan.