Summer Squash with Yum Yum Sauce

This is a light and easy recipe for Grilled Summer Squash with Yum Yum sauce – charred sliced summer squash topped with a sweet, tangy and creamy Japanese steakhouse sauce. Only 10 minutes to make!


  • 2 yellow summer squash (zucchini)
  • 2 green summer squash (zucchini)

Yum Yum Sauce

  • 1 cup mayonnaise
  • 1/4 cup water
  • 1 teaspoon tomato paste
  • 1 tablespoon melted butter
  • 1/2 teaspoon garlic powder
  • 1/2 teaspoon sriracha sauce
  • 1/2 teaspoon sugar
  • 1/4 teaspoon paprika
  • dash cayenne pepper


Yum yum sauce:

  1. Melt butter in a tupperware container and add all the other ingredients except mayonnaise. Stir until smooth. Add mayonnaise and stir until well blended. Refrigerate overnight (or make it early in the morning if you plan of serving it with dinner).

Slicing And Cooking The Squash:

  1. Slice summer squash lengthwise into 1/2 inch thick pieces. This step is optional -> Slice the squash pieces in half widthwise to make it easier to eat.
  2. Lay a couple of sheets of paper towel on a plate or flat surface. Set aside.
  3. Using a barbecue, hibachi grill or grill pan, grill the squash until you see charred marks. Flip the squash pieces and do the same for the other side.
  4. Transfer cooked squash on paper towel and using two more sheets, gently press/ squeeze out excess water from each piece.
  5. Put cooked squash in a bowl or plate and top with a little yum yum sauce. Season with salt and pepper. Put leftover yum yum sauce in a small bowl and serve together with grilled summer squash.


This yum yum sauce recipe was adapted from The Cooking Jar.

Keywords: recipe, hibachi, side dish, appetizer

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