Surprising and Spicy Peanut Sauce

Heat olive oil in a saucepan over medium heat. Cook and stir onion chile-garlic sauce red pepper flakes and garlic until the onion is tender about 5 minutes. Add water peanut butter ketchup sesame oil and sugar to the onion mixture; cook and stir until smooth. Reduce heat to low and simmer until thickened about 15 minutes.