Cut the French or Italian bread into approximately 1/2-inch-thick slices. For softer garlic toast, use slightly thicker slices. For extra-crispy toast, cut the bread a little thinner. Arrange the slices on a clean work surface or baking tray.
In a small bowl, combine the softened butter, minced garlic, parsley, Italian seasoning, salt, and black pepper. Mix until everything is evenly incorporated. Stir in the Parmesan cheese if you want a richer, more savory flavor.
Spread a thin, even layer of garlic butter over one side of each bread slice. Make sure the garlic and herbs are distributed across the surface. Avoid adding too much butter, as excess fat may drip onto the baking tray.
To refrigerate, arrange the prepared slices in an airtight container with parchment paper between layers and refrigerate for up to 24 hours. To freeze, place the slices in a single layer on a tray until firm, then transfer them to a freezer-safe bag or container. Label with the date and store for up to 3 months for best quality.
When ready to serve, preheat the oven to 375°F (190°C). Arrange the prepared bread slices butter-side up on a baking tray. Bake refrigerated slices for approximately 8–12 minutes, or until the edges are golden and crisp. Frozen slices can generally be baked directly from frozen, adding a few extra minutes as needed. Watch carefully to prevent the garlic from burning.