Zucchini Gruyere Frittata

Heat 1/2 tablespoon of oil in a 12-inch nonstick ovenproof skillet over medium-high heat. 

Cook zucchini 10 minutes, turning slices as they brown. 

Add green onion; sprinkle with ½ teaspoon salt and crushed red pepper. 

Cook 2-4 minutes, until zucchini is golden and tender; transfer to a bowl, wipe down skillet. 

Heat broiler with rack in upper level (but not the closest to heat source). 

Whisk eggs, water, cheese, basil and remaining 1/4 teaspoon salt in a bowl. 

Heat remaining 1 tablespoon oil in skillet over medium-high heat; add egg mixture and cook 11/2 minutes to set bottom. 

Spoon zucchini mixture evenly over top; reduce heat to medium-low, cover and cook 5-6 minutes until edge is set and puffed. 

Uncover, transfer to broiler and broil 1-11/2 minutes, just until top is set and lightly golden.