In a large skillet with a lid, heat olive oil over medium heat.
Saute the minced garlic for about one minute, until fragrant.
Add butternut squash noodles to the skillet and cover. Cook for 2 to 3 minutes until the noodles start to soften. Uncover and toss the noodles. Continue to let them cook, uncovered, for another 2 to 3 minutes.
Add the pasta sauce to the skillet and toss into the noodles. Cook the noodles with the pasta sauce until they are as soft as you like them.
Stir in the chopped basil and olives.
Serve immediately. Garnish with whole basil leaves (optional).