Add olive oil and garlic cloves to a small saucepan (make sure garlic cloves are submerged). Cook on low for 30 mins. Cloves should be surrounded by tiny bubbles, not frying in oil.
Preheat oven to 400°F. When cool to touch, scoop out cloves. Place garlic in a bowl and add butter, parmesan, parsley, and kosher salt. Mix until a spread forms.
Lather garlic confit butter on each french bread slice and place on a prepared baking sheet. Bake for 7 minutes or until golden brown. Enjoy!