Start by sautéing your chopped onion and cooking up the Italian Sausage. Break it up into small pieces as it cooks until you can no longer see any pink. Add salt, pepper, garlic powder, and Italian seasoning to taste. 

While your sausage is cooking, prepare the zucchini boats. Start by cutting them in half lengthwise. Then, use a small spoon to scoop out the seedy inside, being careful to leave a border around the outside.

Once the meat is cooked through and all of your zucchini are hollowed out, start assembling the boats. Fill each boat with as much meat as it can hold without pouring over. 

Once the meat is evenly distributed, add a big spoonful of marinara sauce to each boat. 

At this point, you can either cover the boats in plastic wrap and store until dinner time. Or, you can pop them in the oven at 350° for about 30-35 minutes (until zucchini is soft to the touch.) 

Plate and serve!