Are you on Pinterest yet?  I just love it for inspiration.  I saw a picture of this sandwich last week, pinned it, and then was able to find the recipe again when I was making my grocery list for the week.  It seems like a lot of steps, but it really didn’t take long at all. 

I’d never had arugula pesto, and while it’s different than basil pesto, it’s delicious!  This sandwich is creamy, crunchy, salty, and a little sweet.  Loved it!

Arugula Pesto Mayo
3            cups           packed arugula
1/4         cup            walnuts
1/4         cup            freshly grated parmesan
1/4         cup            olive oil
1            tbs             mayo
                               salt and black pepper

Caramelized Walnuts
1            cup            walnuts
2            tbs             light corn syrup
1            tbs             sugar
1/2         tsp             salt
1/4         tsp             ground black pepper

Panini
4           slices         sourdough bread
1                            pear, sliced thinly
4                            thick slices brie

Procedure

Arugula Pesto Mayo

  1. Combine arugula, nuts and parmesan in food processor until smooth.
  2. With machine running, gradually add olive oil and mix until well blended.
  3. Season with salt and black pepper.
  4. Add mayo and blend well.
  5. You will have extra after making the sandwich.

Caramelized Walnuts

  1. Preheat oven to 325°.
  2. Use silpat or spray sheet pan with non-stick spray.
  3. Combine all the ingredients in a bowl and toss well.
  4. Spread out on sheet pan and bake, stirring occasionally to break up clumps, until deep golden brown and sugar is bubbling.
  5. Remove from oven and cool.
  6. You may have extra caramelized walnuts after making the sandwich.

Panini

  1. Spread arugula pesto mayo on both sides on bread.  One one side, layer pears, then cheese and walnuts.  Add top slice of bread and toast on panini press or in a pan lightly coated with olive oil.  If using a pan, weigh down sandwich with another pan on top and a tea kettle or similar for weight.  Flip over to grill evenly.
  2. Eat warm.