Step 1Heat the broiler and set a rack about 4 inches beneath the heating element.
Step 2Divide the crumbled amaretti among 4 individual gratin dishes or shallow ramekins. Divide the fruit evenly over the top, gently pressing the top of the fruit into an even layer.
Step 3In a large bowl, whisk together the mascarpone, honey, liqueur and cornstarch until evenly combined. Dollop the cheese mixture into the gratins, and spread with the back of a spoon or a spatula to spread the cheese and flatten it in an even layer over the fruit.
Step 4Place the gratin dishes under the broiler and cook just until the top of the gratins start to brown, 1 to 2 minutes. Remove from heat and cool on a rack for 5 minutes before serving.