Clean potatoes; prick. Put in microwave for 8 minutes, then move to 450 degrees oven for 20 minutes. Halve lengthwise. Scoop out insides, leaving a 1/4-inch shell. Mash pulp; place shells on baking sheet. Cook onion, pepper, celery and garlic in butter until tender. Add shrimp; cook 2 minutes. Remove from heat. Combine yogurt, juice, sauce and Mozzarella.
T Fat: 17.6 grams, Chl: 133 milli- grams, Car: 39.4 grams, Sod: 1793