Cook pasta to package directions. Drain & set aside.
In a saucepan over medium heat, add the olive oil & butter. Cook a few minutes to soften garlic. Add the half and half & cheeses, bring to a simmer. Stir well until the cheeses melt & the sauce is well combined. Add the blueberries at the very end & cook them until they are hot but not bursting, a minute or so.
Toss with the pasta. Enjoy!