Preheat oven to 350F and lay down a number of no oil corn tortillas right on the track. When I make my bean dip I use quite a few like 15 or more for 2 people, but for just a plate of rice and beans you can bake 2 or 3 tortillas. Bake until crispy which could be 10 minutes or more/less depending on your oven. Watch carefully. Before getting crispy they will be a little bendy which is not ideal. And too much they can get burned. Then break them up into pieces. I used to cut them beforehand using a pizza cutter into 6 pie shaped pieces, which you could also do and put on a baking sheet lined with parchment paper.