Here is one answer I found by googling. Had to include the recipe. See the note at bottom.
hope this helps
2 egg whites
Pinch of salt
Grated rind of 1 orange
1 teaspoon almond extract
1/2 teaspoon vanilla extract
10 ounces (295.73 milliliters) blanched almonds, finely chopped
1/4 cup matzo cake meal
2 tablespoons non-dairy margarine
Confectioners' sugar that is kosher for Passover
Instructions for the Ricciarelli recipe (Passover Almond Cookies recipe; Italian-style amaretto-like cookies):
Beat egg whites with salt until stiff and dry.
Gradually add 1 cup sugar; beat to the consistency of marshmallow cream.
Beat in orange rind, both extracts and almonds, mixing until you have a very stiff paste.
Combine matzo cake meal with remaining 1/4 cup sugar.
Generously grease a baking sheet with the margarine and sprinkle with cake meal-sugar mixture.
Shake off excess.
Drop batter 2 inches apart on prepared baking sheet.
Bake in a preheated 250 degree Fahrenheit (120 degrees Celsius or Centigrade) oven until cookies are very firm and faintly browned, about 45 to 55 minutes.
Remove cookies from oven.
Place confectioners' sugar in a sifter and sprinkle over cookies.
Carefully remove cookies to a wire rack to cool.
When completely cool, store in a tightly closed cookie tin at room temperature.
Note: These ricciarelli almond cookies can be frozen, although they are freshest when eaten within a few days of baking them. Thaw at room temperature for 1 hour before serving.
Makes about 24 to 30 ricciarelli cookies / almond cookies.