To prepare a pad thai stir fried rice ribbon noodles pasta recipe, first you will need to prepare the noodles. First, heat 2 tablespoons of vegetable oil over medium-high heat. Add 1 tablespoon of chopped onion to the oil and saute until the onion is translucent, about 5 minutes. Then add 1 teaspoon of red pepper flakes and stir-fry for 1 minute. Stir in 1 cup of water and bring to boil. Reduce the heat to medium, cover, and simmer for 10 minutes, stirring occasionally.