Slice tomatoes in half and use a small spoon to scoop seeds out in a small bowl. Set aside.
Use a box grater to finely grate the flesh of the tomatoes into a medium-sized bowl. Try to grate as much of the flesh as possible. The skin of the tomatoes should protect your fingers. Discard skins.
Once all of the tomatoes have been grated, place a fine mesh seive over bowl of grated tomato / liqud and pour the scooped seeds into the sieve. Gently press out the liquid from the seeds into the bowl. This should yeild 2 1/3 to 2 1/2 cups of a sauce.
Heat large saute pan to medium and add extra virgin olive oil. Add garlic and saute for about 45-60 seconds, stirring in oil to prevent burning.
Add the grated tomato/sauce to the pan with the garlic and oil and stir. Add salt, onion powder, and whole basil leaves.
Let the sauce come to a boil, then turn down the heat slightly to medium-low to let the sauce vigorously simmer / very gently boil for 10 minutes, stirring occassionally.
After 10 minutes, add onion powder and mix well. Then add the fresh pasta and use tongs to turn and coat with sauce. If needed, bring the heat back up slightly so that you have a vigorous simmer/gentle boil as the last of liquid in the sauce starts to cook off / into the pasta.
Cook pasta and sauce for 4-5 minutes, turning frequently to coat pasta with sauce so that it cooks with the liquid of the sauce and does not stick to the bottom of the pan. If the liquid is mostly cooked off, and pasta begins to stick a little, turn down the heat.
Test pasta for doneness, and then plate and top with Parmesan cheese and fresh basil.
Enjoy!