Make the Dressing: Combine olive oil, white vinegar, sugar, and soy sauce in a jar with a lid. Shake well until the sugar is completely dissolved. Set aside.
½ cup light olive oil, ¼ cup white vinegar, ½ cup white sugar, 2 tablespoons low-sodium soy sauce
Toast the Crunch: Melt the butter in a large skillet over medium heat. While it melts, crush the ramen noodles inside the package using your hands. Discard the seasoning packet. Add the crushed noodles, slivered almonds, and sesame seeds to the skillet. Cook, stirring frequently, for 3–5 minutes until golden brown and fragrant. Transfer to a plate to cool.
2 tablespoons butter, 1 3-ounce package ramen noodles, seasoning packet discarded, ½ cup slivered almonds, 3 tablespoons sesame seeds
Prep the Veggies: Shred the Napa cabbage finely and slice the green onions thin. Place both in a large mixing bowl.
8 –10 cups shredded Napa cabbage, ½ cup thinly sliced green onions
Assemble the Salad: Add the cooled noodle mixture to the bowl with the cabbage and green onions.
Dress and Toss: Right before serving, pour the dressing over the salad and toss well to combine. Serve immediately for the best crunch.