Little Apricot Cakes

INGREDIENTS

• Nonstick vegetable oil spray
• 1 all-purpose flour
• 1 1/2 baking powder
• 1/4 kosher salt
• 6 (3/4 stick) unsalted butter, room temperature
• 1/3 sugar
• 1 large egg
• 1 finely grated lemon zest
• 1 vanilla extract
• 1/3 whole milk
• 2 apricots, halved, pitted, cut into 1/4-inch wedges
• 2 raw sugar
• A standard 12-cup muffin pan