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Desserts · Part 2 of 3: Instructions

Twice-Baked Almond Croissants with Rum Frangipane Step-by-step instructions

A close-up shot of a twice-baked almond croissant with a golden, toasted almond crust dusted with powdered sugar.
Prep
Cook
Total
Serves
6

Before you start

Before beginning, ensure your workspace is clean and organized. Have all ingredients measured and ready, as the assembly process moves quickly once the oven is preheated. Ensure the butter is at a spreadable room temperature, which is critical for a smooth frangipane consistency.

You will need a baking sheet lined with parchment paper to prevent sticking. If the croissants are extremely hard, you may need to increase the amount of syrup slightly to ensure they are adequately moistened before the second bake.

Ingredients at a glance (9)
  • 6 day-old croissants, halved horizontally
  • 150 g softened butter
  • 150 g caster sugar
  • 150 g blanched almond flour
  • 2 large eggs
  • 20 ml dark rum
  • 1/2 cup orange-blossom simple syrup
  • 80 g flaked almonds
  • 2 tbsp powdered sugar, for dusting

Instructions

Mixing the Frangipane

  1. Prepare the Frangipane
    In a medium mixing bowl, combine the softened butter and caster sugar. Whisk vigorously until the mixture is light and creamy. Add the blanched almond flour, eggs, and dark rum. Continue to whisk until the ingredients are fully incorporated into a smooth, thick frangipane paste.
    Look for The mixture should be pale, creamy, and uniform in texture without any visible lumps of butter or dry flour.
    Tip Ensure the butter is at room temperature to achieve the best emulsion when whisking with the sugar.

The frangipane should look like a smooth, thick, and pale cream. When you whisk it, it should hold its shape slightly and feel consistent throughout, with no visible streaks of butter or dry patches of flour. The scent should be distinctly nutty and aromatic from the almond and rum. If the mixture appears separated or oily, continue whisking until it emulsifies into a uniform, cohesive paste that is easy to pipe.

Assembly and Baking

  1. Assemble and Bake
    Preheat the oven to 350°F (175°C). Slice the croissants in half horizontally. Brush the cut sides generously with the orange-blossom simple syrup. Pipe or spread a layer of frangipane onto the bottom half of each croissant, then replace the top half. Spread a small amount of frangipane on top and sprinkle with flaked almonds. Bake for 15 minutes or until the internal temperature of the filling reaches 160°F (71°C) to ensure the eggs are fully cooked.
    Look for The croissants should be golden brown, the frangipane set, and the almonds toasted to a light tan color.
    Safe temperature 160°F (71°C) internal temperature (egg dishes)
    Tip Do not overstuff the croissants, as the frangipane will expand slightly during the baking process.

The assembled croissants should look neat, with the frangipane tucked inside and spread thinly on top. The flaked almonds should be pressed lightly into the surface so they adhere during baking. As they bake, the kitchen should fill with the scent of toasted almonds and butter. The croissants will expand slightly, and the frangipane will turn from a dull paste to a rich, golden-brown filling that is firm to the touch.

Final Dusting

  1. Finish and Serve
    Remove the croissants from the oven and allow them to cool on a wire rack for a few minutes. Once slightly cooled, dust the tops heavily with powdered sugar to create a snow-white finish. Serve warm to enjoy the contrast between the crunchy exterior and the moist, almond-filled interior.
    Look for The powdered sugar should coat the top evenly, contrasting with the toasted almonds and golden pastry.
    Tip Wait a few minutes before dusting so the sugar does not melt immediately upon contact with the hot pastry.

The finished croissants should be crisp, golden, and heavily dusted with powdered sugar. They should feel light yet substantial. The internal temperature must be checked at the thickest part of the filling to ensure safety.

Once cooled for a few minutes, the sugar should form a beautiful, snow-white crust on top of the toasted almonds. The overall appearance should be inviting, with a clear contrast between the dark, caramelized edges and the light sugar dusting.

Common mistakes

A common mistake is using butter that is too cold, which prevents it from emulsifying properly with the sugar and eggs, leading to a lumpy filling. Another error is over-soaking the croissants; they should be moist but not falling apart.

Ensure you do not crowd the baking sheet, as the heat needs to circulate around each croissant to ensure the exterior becomes properly crisp. Finally, avoid dusting the sugar while the pastries are piping hot, as it will simply dissolve into a syrup.

How to tell it’s done

The croissants are done when the exterior is golden brown and crisp to the touch. The almond frangipane should be set, firm, and slightly puffed. Using an instant-read thermometer, verify that the center of the frangipane has reached 160°F (71°C) to ensure the eggs are fully cooked.

The flaked almonds on top should be toasted to a light golden color without any signs of burning, providing a satisfying crunch that balances the moist filling.

  • Egg dishes: 160°F (71°C) in the thickest part

Coming up in Part 3: common questions

  • Can this be made ahead?
  • Why does the frangipane leak during baking?
  • Can the rum be omitted?

Also in Part 3: variations (Chocolate Almond, Spiced Pear), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

2 variations · storage & make-ahead · 3 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)