Chilled Summer Squash Soup With Yogurt, Mint, and Sourdough Croutons Recipe

Ingredients (15)

• For the Soup:
• 3 tablespoons butter (see note)
• 1 medium bunch green onions, white and green parts, chopped
• 3 medium garlic cloves, chopped (about 1 tablespoon)
• Kosher salt and freshly ground black pepper
• 3 pounds mixed summer squash (green or yellow zucchini, crookneck, pattypan), chopped into medium pieces
• About 3 cups water
• 1 cup plain yogurt, low fat or full fat
• 1/4 cup chopped fresh mint leaves plus additional, for serving
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• For the Croutons:
• Half a medium loaf of sourdough bread, cut into a 1/2" dice (about 3 cups bread cubes)
• 1 tablespoon extra virgin olive oil
• Kosher salt and freshly ground black pepper
• 1/2 teaspoon dried herbs, such as herbes de provence (optional)