Ingredients ½ Tbsp. butter for greasing the baking dish 1 ⅔ cups (208 g) all-purpose flour ½ tsp. salt ½ tsp. baking soda ½ tsp. baking powder ½ cup (113 g) butter, soften ½ cup (100 g) sugar 2 large eggs, at room temperature 1 Tbsp. cooking oil (vegetable, canola, grapeseed oil) 1 tsp. vanilla extract 4 ripe bananas, separated (See Note 1) ½ - ⅔ cup raisins (optional) Instructions Preheat oven to 350°F (175°C) and grease an 8」 square baking dish with butter (bottom and sides). In a bowl, combine 1 ⅔ cup flour, ½ tsp salt, ½ tsp. baking soda, and ½ tsp. baking powder and whisk all together. In another bowl, combine ½ cup soften butter and ½ cup sugar and whisk well. Add 2 eggs, 1 Tbsp. oil, and 1 tsp. vanilla and beat with the whisk until well blended. Mash 3 bananas with a fork and mix into the egg mixture. Add the 1 ⅔ cups flour to the banana mixture and stir just until blended. Add raisins, if you prefer. Pour the batter into the prepared pan, spreading it evenly with the rubber spatula. Slice 1 banana thinly into rounds and decorate on top of the banana bread. Put the pan in the oven and bake at 350°F (175°C) until a toothpick inserted into the center of the bread comes out clean, about 1 hour. Remove the baking dish from the oven and let cool for 20 minutes. If you don't eat right away, wrap each slice or the whole cake with plastic wrap. Store at the cool place and enjoy within 2-3 days.