While pasta is boiling, put the oil and garlic in a cold fry pan big enough to hold all the pasta at the end. Place it over a gentle heat to bring up to a gentle sizzle. It helps infuse the oil with the garlic doing it from cold.
When sizzling add the red pepper flakes and let them cook for 30 seconds. The garlic shouldn't brown so turn heat down if you need.
Add the cooked broccoli in and on a very ow heat let it gently cook while your pasta finished boiling. I use a wooden spoon to mash it up slightly.
When the pasta is a minute away from being done scoop half a cup of pasta water out of pot and add to broccoli mixture. Turn heat up slightly to bring it to a simmer.
Add the lemon juice and pepper in and mix through.
Add your cooked pasta into fry pan (I do this straight from the water pot with tongs so I can use any of the left over pasta water if I need).
Toss the pasta with the sauce then arrange the pasta in an even layer.
Turn your heat down and sprinkle the grated parmesan cheese on top in an even layer then let it gently melt on top for 1 - 2 minutes undisturbed!
Using tongs spin the pasta around and around quickly until the cheese is incorporated.
Serve with some extra grated parmesan and the panko on top if using. Enjoy!