Cook peas in large saucepan of boiling salted water for 2 minutes; drain. DO AHEAD: Can be made 2 hours ahead. Let stand at room temperature. Melt butter in medium skillet over medium-high heat. Whisk in 1 tablespoon water. Stir in mint and orange peel; add sugar snap peas and sauté just until heated through, about 1 minute. Season with salt and pepper. Transfer to bowl and serve.