Baby Lemon Impossible Pies With Bright Citrus Flavor

Baby lemon impossible pies are individual lemon custard pies that make their own crust as they bake. A thin batter of eggs, butter, milk, flour and fresh lemon goes into a muffin tin, and the layers separate in the oven into a tender outer edge and a silky lemon center. The recipe makes 12 mini pies, takes 10 minutes to mix and about 25 minutes to bake, and skips rolling and chilling pastry entirely.

What Goes Into the Batter

**Batter**

• 4 large eggs
• 1/2 cup unsalted butter, melted and slightly cooled
• 3/4 cup granulated sugar
• 1/2 cup all-purpose flour
• 2 cups whole milk
• 1/3 cup fresh lemon juice
• 1 tablespoon finely grated lemon zest
• 1 teaspoon vanilla extract
• 1/4 teaspoon salt

**Optional toppings:** powdered sugar for dusting, whipped cream, thin lemon slices or extra zest.

The lemon juice and zest carry the flavor, so use fresh lemons if you can. Bottled juice works, but the flavor is less vibrant, and adding fresh zest helps restore some of the citrus aroma.

How to Bake the Mini Pies

1. **Prepare the pan.** Heat the oven to 350°F (175°C). Grease a standard 12-cup muffin tin thoroughly, including the sides and corners where the pies can stick.
2. **Whisk the wet ingredients.** In a large bowl, whisk the eggs until smooth and lightly frothy. Add the melted butter, sugar, milk, lemon juice, zest, vanilla and salt. The mixture should look pale yellow and completely blended.
3. **Add the flour.** Sprinkle the flour over the liquid and whisk until no dry pockets remain. The batter will be very thin, more like pancake batter than pie filling. That is what lets the layers separate in the oven.
4. **Fill the cups.** Give the bowl a final stir so the flour stays evenly distributed, then pour the batter into the muffin cups, filling each about three-quarters full.
5. **Bake.** Bake on the center rack for 22 to 28 minutes. The tops should be lightly golden, the edges set, and the centers should jiggle only slightly when you move the pan.
6. **Cool.** Let the pies cool in the pan for about 15 minutes. The centers settle into a soft custard while a delicate crust forms around the outside. Loosen each with a thin knife and move it to a cooling rack.
7. **Finish.** Once fully cooled, dust with powdered sugar or top with whipped cream.

How Impossible Pies Make Their Own Crust

In an impossible pie, flour, eggs, butter and milk separate as they bake, forming a light crust-like base and a custard-style center from a single batter. The lemon juice brightens the filling and balances the sugar. Because these bake in muffin cups instead of a pie plate, the edges brown more and firm up slightly around each portion.

Tips for Custard That Sets Without Drying Out

• **Do not overbake.** Pull the pies when the centers are just set. Overbaking makes the custard firmer and drier than intended.
• **Use room-temperature eggs.** They blend into the batter more easily and give a smoother filling.
• **Zest before you juice.** It is much easier to zest a whole lemon, and you capture all the fragrant oil.
• **Let them cool before unmolding.** If the pies stick, give them a little longer in the pan before loosening them.
• **Stronger lemon flavor:** add an extra teaspoon of lemon zest without increasing the juice.
• **Slight settling is normal.** If the pies collapse dramatically, they were probably underbaked. Next time, bake until the edges are set and the centers have only a gentle wobble.

Serving Ideas

Serve these chilled or at cool room temperature. A spoonful of whipped cream softens the tart citrus, and fresh strawberries, raspberries or blueberries add sweetness against the tangy filling. They fit well on a brunch or dessert tray.

If you like lemon desserts, see the easy lemonade pie and the pink lemonade cupcakes. For a berry dessert to put beside them, try strawberry shortcake bars.

Make Ahead, Store and Freeze

• **Refrigerator:** these are egg and milk custards, so refrigerate them within 2 hours of baking. In an airtight container they keep for up to 4 days, and the custard is freshest when kept chilled.
• **Serving from the fridge:** let the pies sit at room temperature for 10 to 15 minutes to soften the texture and bring out more lemon flavor.
• **Make ahead:** the texture holds up after chilling, so you can bake them a day in advance and add powdered sugar or whipped cream just before serving.
• **Freezer:** wrap each pie individually and freeze for up to 2 months. Thaw overnight in the refrigerator.

Lemon Impossible Pie FAQ

Why are they called impossible pies?

A single thin batter separates into a crust and a custard filling during baking, so you get a pie without making a separate pastry shell.

Can I use bottled lemon juice?

Yes, but fresh juice gives the brightest flavor. If you use bottled, add the fresh zest.

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