1.In a small bowl, stir together saffron and water and set aside. Peel potato, halve lengthwise, and cut into 1/8-inch slices. Place slices in a microwave-safe bowl, cover with water, and microwave until soft, but not falling apart, about 5 minutes.

2. While potato is cooking, brush a 10-inch non-stick skillet with olive oil and set over medium-high heat. Add onion, red pepper, zucchini, and garlic and cook, stirring frequently, until softened, about 4 minutes. Remove from heat and transfer contents of skillet into a large bowl.

3. Preheat broiler. Drain potatoes and add to bowl. In another bowl, whisk egg whites and saffron (with soaking water) until frothy. Pour over vegetables and mix to combine.

4. Re-heat skillet over medium heat and pour in egg-vegetable mixture. Press down vegetables with a spatula and dot top with olive halves. Cook without stirring until eggs are set, but still moist on top, about 4 minutes. Remove pan from stove top and place under broiler until top is set and golden brown, about 1 minute. Remove from broiler and slide onto serving dish. Serve at room temperature.

Fat, 11g Carb, 155mg Sod, 0mg Chol, 2g Fiber

whites instead of whole eggs, and maintains its yellow color with saffron, an important ingredient in Spanish cooking. Tortillas should always be served at room temperature.