Macarons Key Ingredients and How to Use Them

French-style macarons are delicate almond meringue cookies with smooth tops, ruffled “feet,” and a creamy filling sandwiched between them. Their key ingredients—almond flour, powdered sugar, egg whites, and granulated sugar—work together to create a crisp shell and chewy center; careful measuring and mixing matter more than complicated equipment.

Ingredients

1 cup (100 g) finely ground blanched almond flour
¾ cup (100 g) powdered sugar
2 large egg whites (about 60 g), at room temperature
¼ cup (50 g) granulated sugar
⅛ teaspoon (0.5 g) cream of tartar
⅛ teaspoon fine salt
¼ teaspoon (1 ml) vanilla extract
Gel food coloring, optional, a small amount
½ cup (113 g) unsalted butter, softened, for the filling
1 cup (120 g) powdered sugar, for the filling
1 teaspoon (5 ml) vanilla extract, for the filling
1–2 teaspoons (5–10 ml) milk or cream, as needed

Instructions

Prepare the pans and ingredients. Line two baking sheets with parchment paper or silicone mats. Use a kitchen scale for the most reliable results: small differences in egg-white or sugar weight can change the batter. Let the egg whites come to room temperature for about 30 minutes. Heat the oven to 300°F (150°C), and position a rack in the center.
Sift the dry ingredients. Sift the almond flour and ¾ cup powdered sugar together into a bowl. Break up any lumps and discard coarse almond pieces that will not pass through the sieve. Set aside. Smooth, finely sifted ingredients help the shells bake with an even surface.
Whip the meringue. In a clean, grease-free bowl, beat the egg whites with the cream of tartar and salt on medium speed until foamy. Gradually add the granulated sugar, then beat on medium-high until the meringue is glossy and forms stiff peaks, about 5–7 minutes. When you lift the whisk, the peak should hold upright. Beat in the vanilla and, if using, a little gel color. Avoid liquid coloring, which can loosen the batter.
Fold to the right consistency. Add the sifted almond mixture in three additions, folding with a flexible spatula after each. Once incorporated, continue folding and gently pressing some batter against the bowl. Stop when it flows from the spatula in a thick ribbon and the ribbon settles back into the batter in about 10–15 seconds. Overmixing makes shells spread; undermixing can leave peaks that do not smooth out.
Pipe the shells. Transfer the batter to a piping bag fitted with a round ½-inch (1.3 cm) tip. Pipe 1½-inch (4 cm) rounds, spaced about 1 inch (2.5 cm) apart, onto the prepared sheets. Hold the bag vertically and finish each round with a small circular motion. Tap each pan firmly on the counter several times to release trapped air. Pop visible bubbles with a toothpick.
Let the shells rest. Leave the piped rounds uncovered at room temperature for 25–40 minutes, until the surfaces feel dry to a light touch and batter does not stick to your finger. Humidity can extend this time. This skin helps the shells rise evenly and form their characteristic feet.
Bake one sheet at a time. Bake on the center rack for 14–16 minutes, rotating the sheet once if your oven heats unevenly. The shells are ready when their tops feel set and do not wobble when gently nudged. Let them cool completely on the pan, about 20 minutes, before lifting them from the parchment. If they stick, they may need another minute or two in the oven, or more cooling time.
Make the filling. Beat the softened butter until smooth, then add 1 cup powdered sugar in two additions. Beat in 1 teaspoon vanilla. Add milk or cream a teaspoon at a time until the filling is soft enough to pipe but still holds its shape. Spoon or pipe a small mound onto the flat side of half the cooled shells, then sandwich with the remaining shells without pressing hard.
Chill for the best texture. Place the filled macarons in a covered container and refrigerate for at least 12 hours so the filling can soften the centers slightly. Bring them toward room temperature before serving; this improves their flavor and texture.

Tips

Keep bowls free of grease. Even a trace of yolk or oil can prevent egg whites from whipping properly. Separate eggs while cold, then let the whites warm; use a clean glass or metal bowl.
Choose the right flour. Use blanched almond flour, not coarse almond meal, which can produce rough shells. If almond flour is unavailable, finely ground blanched almonds can work, but sift carefully. Coconut flour is not a direct substitute because it absorbs moisture differently.
Use stiff, glossy meringue—not dry foam. Stop beating when peaks stand up and the mixture remains shiny. If it looks clumpy or dry, it may be overbeaten and can be difficult to fold smoothly.
Check your oven. Ovens vary, and excessive heat can brown or crack shells. An oven thermometer helps identify temperature swings; if the first tray cracks, try reducing the temperature by 10–15°F (about 5–8°C) and baking a test batch.

Serving Suggestions

Serve macarons at room temperature, when the filling is creamy and the shells are no longer refrigerator-cold. Arrange them on a dessert plate with coffee, tea, or fruit. Their sweetness pairs well with unsweetened drinks and fresh berries. For a neat dessert assortment, group flavors by color and keep the cookies covered until serving so their shells do not absorb moisture or odors.

Variations

For chocolate shells, replace 2 tablespoons (10 g) of the almond flour with 2 tablespoons (10 g) unsweetened cocoa powder; sift them together, and expect a slightly more delicate batter. For citrus macarons, add finely grated lemon or orange zest to the buttercream rather than adding juice to the meringue. To flavor the filling with jam, beat in 1 tablespoon (20 g) thick jam and reduce the milk if needed. You can also use a small amount of concentrated gel color to make pastel shells; avoid adding enough to change the batter’s consistency.

Storage and Reheating

Refrigerate filled macarons in an airtight container within 2 hours of assembling. They keep well for about 3–4 days; let them stand at room temperature for 20–30 minutes before serving. For longer storage, freeze them in a sealed, freezer-safe container for up to 1 month. Thaw overnight in the refrigerator, then bring to room temperature. Do not reheat macarons, as warmth can melt the filling and soften the shells. Unfilled shells can be kept airtight at room temperature for up to 2 days or frozen for up to 1 month.

Frequently Asked Questions

Why did my macaron shells crack?
Common causes include trapped air bubbles, an oven that is too hot, or shells that did not dry enough before baking. Tap the pans after piping, pop visible bubbles, check the oven temperature, and wait until the surfaces feel dry before baking.

Do egg whites need to be aged?
No. Room-temperature egg whites whip well when measured accurately and handled in a clean bowl. Some recipes age separated whites, but it is not essential for this method.

Can I use liquid food coloring?
It is better to use gel coloring. Liquid color adds extra moisture and can thin the meringue, making the batter harder to control. Add gel sparingly so the mixture stays thick enough to pipe.

How do I know when the shells are done?
The tops should feel set, and the shells should not wobble when gently nudged. Baking time varies with the oven and shell size, so check near the end of the stated range and let the shells cool before removing them.

Why are my macarons hollow?
Hollows can result from an unstable meringue, uneven oven heat, or shells that rise too quickly. Make sure the meringue reaches glossy stiff peaks, fold only until the batter flows in a ribbon, and use an oven thermometer to check the baking temperature.

Can I make macarons without almond flour?
Almond flour is central to the texture and structure of classic macarons, so replacing it with another flour is not a reliable one-for-one swap. Other nut flours may work in adapted recipes, but they can change the flavor, texture, and moisture balance.

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