Tomato Sandwiches Recipe

Ingredients

• 1/2 cup mayonnaise or whipped cream cheese
• 1 large onion, thinly sliced
• 6-8 small arugula leaves, washed & patted dry
• 2 large eggs, lightly beaten with 1 tablespoon water
• 1/2 teaspoon salt
• 1/2 cup bread crumbs, unflavored, toasted
• 3 tablespoons unsalted butter
• 2 tablespoons olive oil