A tuna salad sandwich is a delicious lunch that's easy to prepare; however, if you're getting bored with this basic meal, consider boosting its flavor with a simple dressing swap.

Traditional tuna salad uses mayonnaise, but adding a bit of Dijon mustard will add some spice and texture, making even a drab tuna salad sandwich dance on your tastebuds.

You can either mix in a small amount with the mayo for a hint of mustard flavor or go half-and-half for a stronger taste. For extra texture, look for brown mustard.

Spicy brown mustard has whole mustard seeds and is a bit grainier than Dijon mustard. Regardless of the mustard you choose for your tuna salad, start with just a little bit.

Adjust the amount of mustard to suit your taste. Make sure to fluff the tuna before mixing it with the dressing to ensure a consistent texture and flavor in your tuna salad.