Preheat your oven to 325°F. In a small bowl, combine the cranberries, ½ cup sugar and the almonds. Transfer the mixture to a greased 11-inch fluted tart pan with a removable bottom. Place the tart pan on a baking sheet.
In a small bowl, use a hand mixer or stand mixer to beat the eggs, melted butter, almond extract and the remaining sugar. Beat in the all-purpose flour just until the flour is moistened. The batter will be quite thick.
Pour the batter into the tart pan over the sugar, cranberries and almonds. Use a rubber spatula, the back of a spoon or a mini offset spatula to spread the batter evenly over the berries.
Bake the cranberry tart until a toothpick inserted in the center comes out clean, 40 to 45 minutes. Cool the cranberry tart in the tart pan on a wire rack. Once cooled to room temperature, dust the tart with confectioners’ sugar.
