Upside-Down Mini Lemon Meringue Pies

Ingredients

• Graham Cracker Crumble
• 1½ sleeves graham crackers (about 10 crackers)
• 3 tablespoons granulated sugar
• ½ teaspoon kosher salt
• 6 tablespoons butter, melted and cooled slightly
• Lemon Curd
• 4 large egg yolks
• 2 large eggs
• 1 cup lemon juice (from 4 to 6 lemons)
• 1 tablespoon lemon zest
• 1½ cups granulated sugar
• 6 tablespoons unsalted butter, at room temperature
• Pinch of kosher salt
• Meringue
• 4 large egg whites
• ½ teaspoon cream of tartar
• 1 cup granulated sugar