Mix sour cream with remaining sugar, vanilla, and lemon zest.

Step 6: Top It Off
Remove pie from the oven, let it cool briefly, then turn the oven up to 450°F. Spread the topping evenly over the pie.

Step 7: Flash Bake
Bake for 5 more minutes to gently set the topping.

Step 8: Chill Time
Cool on the counter, then refrigerate for at least 4 hours. Overnight chilling? Even better.

 Tips for Serving

• Add a sprinkle of crushed graham crackers or candied lemon peel for flair.
• Serve chilled with whipped cream or a few fresh raspberries for color and contrast.
• This pie makes 8 generous slices—perfect for sharing or savoring solo across a few sweet days.