Thinly slice a baguette; arrange in a single layer on a baking sheet. Brush with olive oil and sprinkle with salt. Bake at 425 degrees F until lightly golden, about 7 minutes. Let cool slightly.
Cut off the top inch of 2 heads of garlic. Drizzle with olive oil, wrap in foil and roast 1 hour at 400 degrees F. Squeeze the garlic out of its skin and mash. Meanwhile, fry sage leaves in olive oil until crisp. Spread softened butter on the toast rounds. Top with the roasted garlic, sliced sun-dried tomatoes, the fried sage and sea salt.