400gtart apples, peeled and finely diced (about 3 small apples)
30gbrown sugar
2teaspooncornstarch
1teaspoonground cinnamon
100gwater
2tablespoonslemon juice, (about 1 lemon)
Almond Frangipane
115gunsalted butter, softened to room temperature
100galmond flour
60gpowdered sugar
⅛teaspoonsalt
2large eggs, room temperature
½teaspoonalmond extract, optional
Croissants
6croissants, day-old
sliced almonds, for topping
powdered sugar, for dusting
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Instructions
Simple Syrup
Dissolve sugar: In a small pot, stir together water and sugar. Bring it to a simmer, stirring occasionally, until all the sugar has dissolved. Transfer a small portion of the simple syrup to a small bowl to brush on the croissants later. Transfer the rest to a clean, airtight container to cool and store in the fridge.
Apple Pie Filling
Boil: In a small pot, stir together diced apples, brown sugar, cornstarch, cinnamon, water, and lemon juice. Cover and bring it to a boil on medium heat.
Cook off water: Uncover and allow most of the water to evaporate, stirring occasionally, until the apples are tender and coated in a jammy glaze. Transfer the apple filling to a bowl and let it cool completely before using.
Almond Frangipane
Prep: Preheat the oven to 350°F. Line a baking sheet with parchment paper and set aside.
Cream butter: In a large mixing bowl, use an electric hand mixer to beat the softened butter until it becomes very creamy. Add the almond flour, powdered sugar, and salt. Beat together until combined.
Add eggs: Mix in the eggs one at a time. Finally, mix in the almond extract (optional). Transfer the frangipane to a piping bag and snip the tip off. Set aside.
Croissants
Brush: Cut each croissant in half lengthwise. Use a pastry brush to brush simple syrup on both halves of the croissants.
Filling: Pipe a generous squiggle of frangipane on the bottom halves of each croissant. Add a heaping spoonful of apple pie filling on top of the frangipane and spread it out slightly. You can use all of your apple filling now or save some for adding on top of the croissants later.
Topping: Place the top halves of the croissants on top of the filling. Pipe a line of frangipane on top of each croissant. Press a small handful of sliced almonds on top of the frangipane.
Bake: Bake for about 22-25 minutes or until the croissants are crispy and golden brown.
Finishing touches: Top each almond croissant with another small spoonful of apple pie filling and dust with powdered sugar before serving warm or let them cool completely.
Notes
Simple syrup: The recipe here makes about a cup of simple syrup - much more than you need for these almond croissants. I figured if you're going to go through the trouble of making it, you might as well make more. The extra can be stored in a clean, airtight container in the fridge for up to 1 month. You can use it to make drinks and cocktails, brush it on cakes to keep them moist, or make more almond croissants. If you don't want to make this much simple syrup, you can halve or even quarter the recipe.