Generate a close-up image of a slice of moist banana bread cake topped with a thick layer of creamy frosting. The cake slice should show a rich, golden-brown color with specks of banana and tiny, evenly distributed pieces of nuts or chocolate for texture. The frosting should be smooth and generously spread on top, with a few fresh banana slices as garnish. Place the cake slice on a white, textured plate to add a homely touch. The background should be softly blurred, with warm lighting to emphasize the moistness and richness of the cake