Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.

Slice the gluten-free baguette in half lengthwise.

In a small mixing bowl, combine softened butter, minced garlic, garlic powder, parsley, and salt until a smooth paste forms.

Spread the compound butter evenly across the cut surface of both baguette halves, ensuring coverage to the edges.

Sprinkle the grated Parmesan cheese uniformly over the buttered surface.

Place the baguette halves, buttered side up, onto the prepared baking sheet.

Bake for 10 to 12 minutes until the butter is bubbling and the bread edges achieve a golden-brown color.

Optional: Broil on high for 60 to 90 seconds for enhanced caramelization, monitoring closely to prevent scorching.

Remove from heat, rest for 2 minutes for the butter to set slightly, then slice into 1.5-inch segments.