Preheat oven to 400°F. Remove the paper-like outer peel, or skin of the head of garlic and cut off the tips to reveal the inner cloves. Drizzle with olive oil and sprinkle with salt. Then, wrap the garlic tightly in aluminum foil. Place in the oven and roast for an hour or until garlic cloves are deep golden brown. Once done, set aside to cool.
In a small bowl, combine softened butter, 1/2 teaspoon kosher salt, 1/2 teaspoon black pepper, red pepper flakes, and chives. Carefully squeeze the roasted garlic cloves out of the garlic head and add into the butter mixture. Mix to combine.
Place the butter mixture on a piece of plastic wrap. Roll it up and shape the butter into a cylinder in the plastic wrap. Place in the fridge to harden.
Serve on bread, steak, or anything else you’d like. Enjoy!