Preheat oven to 350º

Rinse broccoli and cauliflower and chop into small pieces. Add to a pot of water and boil until tender. When cooked through, drain in colander and set aside.

Coat casserole dish with non-stick cooking spray

Break the egg in a large mixing bowl, and lightly scramble 

Add cream of mushroom soup and mayonnaise to the egg and mix together well.

Add cheese to the bowl and mix well.

Add cooked broccoli and cauliflower to the bowl and mix well. Add a pinch of salt and pepper, to taste.

Pour mixture into greased casserole dish and spread evenly.

Crush Ritz crackers and add as the casserole topping, distributing the crumbles evenly.

In a microwave-safe dish, add butter and heat for 30 seconds, or until melted. Drizzle crackers with the melted butter.

Bake for 30-35 minutes.