Frittatas make ideal leftovers, but slipping a slice between two pieces of bread makes it even more portable. Although frittatas are flavorful enough on their own, a little onion jam, red pepper spread, or even curry ketchup would make this type of sandwich even better.
Get the recipes:
• Tomato Basil Frittata Sandwich at A Cozy Kitchen
• Broccoli Rabe & Fresh Mozzarella Frittata Sandwich at Food & Wine
• Turkey Sausage & Vegetable Frittata Sandwich at Bon Appétit
• Zucchini Frittata & Tomato Sandwich at Food Network
(Image: A Cozy Kitchen)