Vegan Creamy Baked Mac and Cheese

Name: Vegan Creamy Baked Mac and Cheese
Ingredients: * 2 cup uncooked macaroni; * 1 onion, diced; * 1 tbsp vegan margarine (like becel vegan); * 1 yellow zucchini, washed and grated; * 1 tsp paprika; * 1 tsp garlic powder; * a pinch of cayenne (to taste); * 1 heaping tbsp flour; * 1 tsp dijon mustard; * 1 1/4 cup unsweetened soy milk; * 1/4 cup nutritional yeast; * 2 heaping tbsp daiya cream cheese; * 1/2 cup daiya cheese shred (i used jalapeno jack flavored shred); * 1 scant tbsp coarse salt (to taste); * for the topping:; * 1/4 cup daiya cheese shred (i used jalapeno jack flavored shred); * 1/3 cup bread crumb; * 2 tbsp melted butter