Melt the bacon grease in a skillet over med. high heat, add in the zucchini, onion and carrot. Cook, stirring occasionally, for 5-6 minutes or until the zucchini becomes tender.
Remove from the heat and stir in the soup, cream, pepper and garlic powder. Stir in the cheese and combine well. Stir in 3/4 of the stuffing mix and combine well. Pour into a 9x9, lightly greased baking dish. Combine the melted butter with the remaining stuffing mix and sprinkle over the top. Cover with tinfoil and bake in a 350 degree oven for 25 minutes. Remove and uncover, return to the oven for 5 minutes.