A dish combining the best of a fricassee and chow mein. The avocados add striking color and flavor.
Preheat oven to 350°F. Grease a large casserole with a lid.
Spread almonds in a single layer on a baking sheet. Bake until lightly browned, about 5 minutes, then set aside to cool.
Put chicken, zucchini, and chestnuts into prepared casserole and set aside.
In a pan over medium heat, warm broth. Add bouillon cubes and stir to dissolve.
In another pan over low heat, melt butter. Add flour and whisk to combine, cooking for 1 minute, stirring constantly. Slowly add chicken broth, stirring constantly, and cook until sauce is smooth and thickened, about 5 minutes. Pour sauce over ingredients in casserole. Cover and bake for 30 minutes. Sprinkle grated cheese on top and return to the oven, uncovered, to bake for 15 minutes, or until cheese melts. Arrange avocado slices on top of casserole. Sprinkle with almonds.