• prep: 30 min
• cook: 1 hr 20 min
• total: 1 hr 50 min

servings:

What makes classic peanut butter filling in chocolate cups irresistible is the edge of salt against sweet. That and a texture that hovers between creamy and crumbly. To get more peanutty goodness—and a tastier homemade version of it—blitz up peanuts, sugar, and salt and stuff it into a huge tart pan lined with chocolate. It's as addictive as the original with a freshness from just-ground peanuts.

• Nonstick vegetable oil spray
• 18 ounces milk, semisweet, and/or bittersweet chocolate (preferably 40–60% cacao), chopped
• 1 tablespoon plus 1 1/2 teaspoons coconut or other neutral vegetable oil
• 1 pound unsalted, dry-roasted peanuts (about 3 1/2 cups; see Cooks' Note)
• 1 1/2 cups powdered sugar
• 3 tablespoons creamy peanut butter
• 1 3/4 teaspoons fine sea salt
• A 10" fluted tart pan with removable bottom

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