Creamy Cilantro-Lime Slaw

Creamy Cilantro-Lime Slaw 1/2 cup mayonnaise 1/2 cup sour cream 3 tablespoons fresh lime juice -- (or more) 1 1/2 teaspoons finely grated lime peel 1 Serrano chile -- seeded, minced 2 garlic cloves -- pressed 1/3 cup chopped fresh cilantro 8 cups thinly sliced green cabbage 4 green onions -- minced (about 1/4 cup) Whisk mayonnaise, sour cream, 3 tablespoons lime juice, lime peel, chile, and garlic in large bowl. Stir in cilantro. Add cabbage and green onions; toss to incorporate evenly. Season with salt and pepper. Cover and chill 1 hour. DO AHEAD Can be made 1 day ahead. Keep chilled. Season slaw with more lime juice, salt, and pepper, if desired, just before serving