Preheat oven to 350
Rinse and dry the zucchini
Cut zucchini in half (long ways) and scrape out the seeds to make room for the sausage stuffing
Sprinkle the smoked paprika, salt and pepper over the zucchini
Line a baking sheet with parchment paper and bake zucchini, face down or skin up, in oven for 30 minutes or until tender
While zucchini is baking, cook sausage until no longer pink
While sausage is cooking, dice the onion and bell pepper
Remove sausage from the pan and drain on a paper towel lined plate but leave the drippings in the pan
Sauté the onions and bell pepper in the sausage drippings until tender
Add in the red pepper flakes, if you so desire
Add sausage to the onions and pepper and mix to combine
Remove zucchini from the oven and stuff with the sausage mixture
Top with cheese and broil until the cheese is melted
Top with fresh basil leaves and serve