1. Blend and Pour. Process eggs and 2 Tbsp. water in a blender until blended. Melt butter in an 8-inch nonstick skillet over medium heat; add spinach and tomatoes, and saut´´ 1 minute or until spinach is wilted. Add salt and egg mixture to skillet.
2. Lift and Tilt. As egg mixture starts to cook, gently lift edges of omelet with a spatula, and tilt pan so uncooked egg mixture flows underneath, cooking until almost set (about 1 minute). Cover skillet, and cook 1 minute.
3. Fold and Serve. Sprinkle omelet with cheese and pepper. Fold omelet in half, allowing cheese to melt. Slide cooked omelet onto a serving plate, and season with salt to taste. Serve with buttered toast and fresh fruit.