1 1/2 cups chopped seeded tomatoes, or halved grape tomatoes
1/2 cup feta cheese crumbles (plain or flavored)
2 teaspoons Panko breadcrumbs
Spray an ovenproof skillet with olive oil and heat over medium heat. Add the shallot and cook until softened, around 5 minutes.
While the shallots are cooking, in a medium bowl whisk together the eggs and mustard. Stir in tomatoes and season with salt and pepper. Add egg mixture to the cooked shallots in the pan. Sprinkle top with feta and cook until eggs are almost set, around 5 minutes. Sprinkle top with breadcrumbs and place under broiler until eggs are cooked through and the breadcrumbs are lightly brown. Watch carefully as it cooks quickly! Serve immediately.