Place cauliflower crumbles, eggs, flour, baking powder, salt, pepper, onion powder and garlic powder into a bowl and whisk until combined. Fold in cheddar cheese.
Heat a Belgian waffle maker to medium heat. Coat with cooking spray. Scoop ½ cup batter and spread on the bottom of the waffle maker. Close lid and cook 4-6 minutes, until waffle is browned and cooked through. Remove and repeat with remaining batter, coating with cooking spray between each waffle.
Break waffles into quarters. Top half of the quarters with a slice of cheese, bacon, avocado and a fried egg. Top with other quarters of waffle to make a sandwich.