Crack egg into a blender. Add zucchini and salt and pepper. Blend until almost smooth.
Heat oil in a pan over medium heat. Pour 1/2 of zucchini batter into an oven safe pan, cover, and cook for 5 min. Turn oven on broil, remove lid from pan and place pan under broiler and cook for 3 minutes or until set.
Dice tomato into small pieces and add chopped basil. Top the zucchini cake with the tomatoes. An even quicker option is to top the zucchini cake with pre-made salsa!
Save any leftover zucchini batter covered in fridge. When ready to use shake well before pouring into the pan.