To make crispy rice noodles you just need a package of rice noodles and vegetable oil. Simply place 1-2 cups oil in a large skillet so it's about 1/2 inch deep over medium-high heat.
While oil is heating up, break up some of the rice noodles. It's sometimes easier to place some in a plastic ziploc bag and using a mallet gently break them into pieces.
Keep a paper towel line plate nearby and you can test the oil to make sure it's hot enough by placing a noodle in the oil. If it quickly puff's up you are ready to go. Note these puff up fast so be sure you have a scooper in hand to fetch the noodles out of the oil when they are done.
Once you're ready to go place a small amount of the rice noodles in the oil until they puff up, less than a minute so be ready to to carefully scoop them up before they overcook and turn brown.
Place them on the paper towel lined plate and keep working in batches until you have as much as you want.
Crispy Rice Noodle Recipe adapted from Thai Kitchen