Preheat the oven to 375 degrees F.
Line a rimmed baking sheet with parchment paper, silicon mat, or foil.
Spread the unpeeled garlic cloves in a single layer on top of the baking sheet and drizzle with just enough olive oil (approximately 2 tablespoons) so all the garlic cloves are coated.
Lightly season the garlic cloves with kosher salt pepper.
Roast garlic for 45-60 minutes, gently shaking the pan half way through.
The roasted garlic cloves are finished roasting when they are fork tender and golden brown.
Add the roasted garlic to an airtight container or jar. Fill the container with olive oil and store in the refrigerator. Roasted garlic will last up to 2 weeks in the refrigerator.