Old-School Tomato Sandwiches Get A Modern Protein Boost With This Tangy Mayo Swap

Sandwiches may come in many different forms, but they don't always need to be complicated. Sometimes, a classic combination hits the spot better than anything else. Take a tried-and-true tomato sandwich, for example — all you need for this delicious sandwich is just tomatoes, mayonnaise, and bread, plus salt and pepper. While this sandwich is tasty as is, there is a simple swap you could make to add a bit more protein to your meal. Try replacing mayonnaise with Greek yogurt for a lighter, tangier, protein-packed sandwich. 

There are a variety of ways you can upgrade a tomato sandwich (such as swapping the bread with biscuits for a Southern twist), but using Greek yogurt is an easy way to take your sandwich to the next level. The tangy, slightly sour taste from the lactic acid in the yogurt balances the sweet-tart flavor of the tomatoes. Plus, there's around 1 gram of protein per tablespoon of Greek yogurt, so adding a few spoons of it can quickly make your sandwich more satiating. Whether you want to enjoy it in a plain recipe or get creative with upgrades, your sandwich will be refreshing, filling, and delicious. 

The tomato and Greek yogurt sandwich is tasty alone, but there are plenty of ways to enhance it further. Additions such as cucumber, red onion, or parsley make for a delicious Greek-inspired sandwich. You could even turn your Greek yogurt into a tzatziki sauce to really take your tomato sandwich to the next level. Or, season the Greek yogurt with garlic, basil, and sriracha for a bit of heat. If you want to add a briny flavor to the mix, top your sandwich with a few olives or capers. You can also try toasting your bread first to keep the yogurt and tomato's moisture from making your sandwich soggy. 

It's an option to experiment with the bread you use as well. Try multigrain for a more nutty, earthy note or whole wheat bread for added fiber. And of course, always make sure to use the ripest tomatoes for a tomato sandwich, and season them beyond salt and pepper, perhaps with some herbs like basil, to enhance their taste. There aren't many flavors that don't pair well with Greek yogurt, which is why it's such a good mayo swap for your sandwich.