Almond Macaroon Galette with Strawberries

INGREDIENTS

• 3 large egg whites
• 2 teaspoons finely grated lemon zest, plus 2 teaspoons fresh lemon juice
• 1 cup confectioners' sugar
• 1 1/2 cups sliced blanched almonds, toasted and finely ground in a food processor
• Vegetable-oil cooking spray
• 1 1/2 pints strawberries (about 6 cups), hulls on
• 1 tablespoon granulated sugar
• 1 tablespoon kirsch
• 3 tablespoons strawberry jam