Place potatoes in microwave-safe bowl; sprinkle with water.

Cover, venting one corner.

Microwave on HIGH 5 to 8 minutes just until potatoes are tender. (Time will depend on wattage of your oven.)

Meanwhile, heat oil in large nonstick skillet over medium-high heat. Add and break up turkey; cook 5 minutes, tossing occasionally. Mix in carrot; cook 2 minutes. Add potatoes and onions; cook and toss 2 minutes. Reduce heat to medium; mix in tomato sauce, cheese, and herbs.

Cook, stirring occasionally, 4 to 5 minutes until mixture is hot and most of sauce is absorbed. Season with salt and pepper. On work surface, lay out tortillas. Place 3/4 cup hot turkey mixture on each; fold and roll up as for burritos.

Cut in halves and place on serving plates. Accompany with sour cream, if desired.