Preheat the oven to 200 degrees Celsius.
Preheat a nonstick pan over medium heat with a little bit of olive oil.
Add the chopped onion and fry for 2-3 minutes.
Add the minced garlic and fry for about 1 minute.
Next add paprika powder, cumin, garlic powder, chili powder and stir to combine with the onions.
Add in the ground beef and fry for 5-7 minutes, until golden brown, breaking the beef using a spatula or wooden spoon.
Remove from the stove, drain excess water/fat from the frying pan.
Pour the fried beef into a bowl together with ricotta and grated parmesan cheese. Stir to combine, season with salt and pepper as needed, taste to check the seasoning.
Pour marinara/tomato sauce to an oven safe baking dish.
Take one slice of zucchini, place about one tablespoon of the beef/ricotta filling and roll up. Place in the marinara/tomato sauce filled baking dish. Repeat with remaining beef/ricotta mixture.
Grate additional parmesan cheese over the rolls.
Bake in the oven for 25-30 minutes. Turn on the broiler to get a nice golden brown color if needed at the end. But make sure to keep a close eye on the rolls so they don't burn.