Total Time
Prep 15 mins
Cook 10 mins

This is wonderful to make with your garden-ripe summer tomatoes! To save time prepare the mayonnaise mixture up to a day in advance. Since we love lots of spice, I use Tabasco brand spicy brown mustard but any brand brown mustard will do for this recipe, I also add in a pinch of cayenne pepper too! Recipe can easily be doubled.

Ingredients Nutrition


  1. Set oven to 350°F.
  2. Lighly grease a large baking sheet.
  3. In a small bowl combine the mayonnaise, Parmesan cheese, Dijon mustard, brown mustard and oregano; mix well to combine then season with salt and pepper to taste (I use seasoned salt for this).
  4. Using a spoon top each tomato slice with a small amount of mayo mixture.
  5. Sprinkle each slice with mozzarella cheese, then sprinkle with chopped parsley.
  6. Bake for about 10-15 minutes or until golden brown.
Most Helpful

5 5

Yummy! I wanted a lite dinner as I had a big lunch and this hit the spot. I used Mrs. Dash Italian Seasoning in place of the dried oregano and used just Dijon as I didn't have brown mustard. Thanks, Kittencal, for posting!! :)

3 5

This is like Bruschetta without the bread. It had a real nice flavor. Not a kid-friendly recipe though. Would be great for low-carb diet. Thanks for sharing!

5 5

I had this with breakfast this morning and it was great! My DH enjoyed it too! Thank you Kitten!