Add sesame oil to a pan over medium heat and warm the oil for 3-5 minutes. Add diced garlic and cook until fragrant. Add red pepper flakes and ginger and continue to cook for an additional 3 minutes.

Gently whisk in peanut butter, soy sauce, chicken broth, honey, and sriracha. When sauce begins to thicken, reduce heat to low and whisk constantly until desired texture is reached. Remove from heat.

Boil noodles according to package instructions. Drain and toss in the sauce.