INGREDIENTS
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3 tablespoons extra-virgin olive oil
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2 large or 4 small shallots, thinly sliced
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3/4 teaspoon kosher salt, plus extra for seasoning
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1/4 teaspoon freshly ground black pepper, plus extra for seasoning
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2 cloves garlic, minced
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1 1/2 pounds (about 2 medium) russet potatoes, peeled and cut into 3/4-inch pieces
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3 cups low-sodium chicken broth
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1 cup arugula
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1/2 cup mascarpone, at room temperature
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2 (1/2-inch thick) slices sourdough or multi-grain bread, cut into 1/2-inch cubes
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2 tablespoons extra-virgin olive oil
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1/4 teaspoon kosher salt
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8 cherry or grape tomatoes, quartered