Baked Broccoli Cheese Balls

2 cups broccoli florets, finely chopped
1 cup breadcrumbs
1 1/2 cups shredded cheddar cheese
1/3 cup grated Parmesan cheese
2 eggs
2 tablespoons all-purpose flour
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
Salt and pepper, to taste
Cooking spray, for greasing
Directions: