Preheat the oven to 375 degrees F (190 degrees C).
Boil broccoli florets for about 3 minutes and drain. Finely chop into small pieces and add to a bowl.
Add the breadcrumbs, egg, cheese, chopped onion, garlic powder, and salt (if using) to the bowl with the broccoli.
Mix well until combined.
Pack into mini muffin pan and press down. Bake at 375 for 20-25 minutes or until golden brown on top. Allow bites to completely cool before serving.
