Remember those grilled sirloins from last week! Well here is what I like to make with the leftovers: Steak Sandwiches with Pesto Mayonnaise. These sandwiches are AMAZING!

I added all of my favorite ingredients: mushrooms, onions, spinach, provolone and pesto!

Yep that's right! I made my own pesto mayo! It sounds fancy, but all you do is mix together mayonnaise and store bought pesto. It will impress everyone though!

Steak Sandwiches with Pesto Mayonnaise

Author: The Hungry Waitress

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Description

Use up your steak leftovers with these Steak Sandwiches with Pesto Mayonnaise! These sandwiches contain sauted mushrooms and onions, spinach, thinly sliced sirloin, and pesto mayonnaise!

Ingredients

Scale

4 thick slices of sour dough bread
2 Tablespoons of butter or Herb Butter, melted
1 Tablespoon olive oil
1 cup mushrooms, sliced
1/2 cup onions, chopped
1 Tablespoons of mayonnaise
1 Tablespoons of store bought pesto
1 cup thinly sliced Grilled Sirloin, or as much as you want!
4 slices of provolone cheese
1 cup fresh spinach

Instructions

Heat up a skillet to medium high.
Pour in 1 Tablespoon of olive oil, sliced mushrooms and onions.
Cook the mushrooms and onions for about 5 minutes stirring occasionally.
Remove the mushrooms and onions from the pan (your going to use this same pan to toast the bread).
Brush the melted butter on both sides of the sour dough bread.
Place the bread into the hot skillet (still on medium high heat).
Toast each side of the bread for 2 minutes.
In a small bowl, mix together the mayonnaise and pesto.
Now it's time to build the sandwich! Start by spreading the pesto mayonnaise onto one side of the bread.
Then put as much Grilled Sirloin as you like onto the bread.
Top the Grilled Sirloin with provolone cheese, fresh spinach, mushrooms and onions.
Finish with the other slice of bread and enjoy!