Preheat oven to 400. Line a baking sheet with aluminum foil.
Cut bread in half, then cut each half in half and lay crust side down on the lined baking sheet.
In a bowl combine butter and garlic cloves. Liberally spread butter-garlic spread on each half of the bread (you should have 4 halves).
Sprinkle shredded mozzarella onto buttered halves. Bake for 10 minutes, until the cheese starts to melt. Remove from oven, add feta crumbles and dry roasted sunflower seeds, then bake for another 10 minutes until the edges are golden brown. Let cool for a few minutes, then cut into slices and enjoy!