Makes: about 3 1/2 dozen potato halves at $2.10 per dozen. Prep: 15 minutes. Bake: at 400° for 15 minutes; then at 350° for 20 minutes.
Heat oven to 400 degrees F.
Toss potatoes with oil in roasting pan until potatoes are well coated. Sprinkle with rosemary, garlic, salt and pepper; toss until potatoes are well coated.
Bake in 400 degree F oven for about 15 minutes. Lower the oven to 350 degrees F. Bake for 20 minutes or until the potatoes are cooked through but still somewhat firm; stir the potatoes during the baking.
Transfer the roasting pan to a wire rack and let the potatoes cool until warm.
Place potato halves, flat sides up, on a serving platter. Dollop each potato half with a teaspoon of sour cream and a teaspoon of caviar. Serve at once.