Butter Mixture: Put the butter, 1 1/4 teaspoons garlic powder, 1 1/4 teaspoons kosher salt, and 1 teaspoon minced garlic in a small bowl. Mix to fully combine & set aside.
Prep Bread: Cut baguette into thick (1 inch) slices, without cutting all the way through the bottom. Using a knife, spread the butter inside each slit in the baguette.
Bake: Wrap baguette in aluminum foil and place in the preheated oven, middle rack. Bake for 15 minutes.
Serve: Enjoy immediately!
Notes
Can I prep the garlic butter mixture ahead of time? Yes, it can be mixed in a bowl, covered, and stored in the fridge until needed. Just make sure to leave it out at room temperature or soften in the microwave before using.
Can I use parchment paper? Yes, it can be used in place of foil, but be sure to wrap it securely around the garlic bread to keep it covered during the baking process.
Storage: leftovers can be kept in an airtight container on the counter top for 1-2 days, but it is best served fresh out of the oven.