Combine flour, oatmeal and both sugars in the bowl of a food processor. Pulse to mix well. Add the butter to the bowl, replace the top and pulse the machine to incorporate the butter. Work quickly and use short pulses to make a dry, loose, fluffy mixture resembling sand. Do not allow the butter to soften or make a dough. Transfer the streusel to a small bowl and add the nuts and coconut. Toss by hand to mix well. Reserve until needed.
MANGO MACADAMIA NUT CRISP: Preheat oven to 350 degrees. Place the diced mango and the grated ginger in a saucepan and place over medium low heat. Cook mango slowly, stirring until it releases its juice and begins to simmer, about 5 to 7 minutes. Simmer about 3 minutes more until mango is tender and juices are bubbly. Remove mango pieces with a slotted spoon to a small bowl. Leave mango juice in pan and bring to a boil. Stirring constantly, boil the mango juice until it is reduced by 3/4 and is syrupy. Scrape syrup into bowl with mango and add brown sugar and honey. Stir gently to combine. Transfer mango to a lightly buttered 2 quart shallow bake pan (a round 9 inch cake pan works as well). Sprinkle the Oatmeal Macadamia nut streusel over the mango filling, covering evenly. Place baking dish on a cookie sheet (to catch any bubbling filling) and place in the oven. Bake 25-30 minutes until streusel is golden and the filling is bubbly. Cool to room temperature before serving.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Susan Goss, Zinfandel Restaurant, Chicago, IL