Spread butter (or mayonnaise) on the outside of each piece of bread, then spread blackberry jam on the inside of each piece. Heat large skillet on medium-low. Carefully place pieces of bread butter-side down in skillet. On one piece of bread, top with slices of brie, bacon, and a few rosemary leaves. Cover skillet with a lid, turn heat up to medium, and continue cooking until cheese is melted and bread is toasted. Carefully fold slices of bread with jam over slices with brie and bacon. Cut in half and eat immediately.
Per serving: 578 calories, 26 grams fat (15 grams saturated fat), 82 milligrams cholesterol, 1,020 milligrams sodium, 62 grams total carbohydrates, 1.5 grams fiber, 24 grams protein.