Name: Banana Poppy Seed Cake with Lemon Buttercream
Yield: serves 9-12
Ingredients: 2 Tbsp unsalted butter, at room temperature; 2/3 cup sugar; 1/2 cup sour cream; 1 large egg, room temperature; 2-3 ripe bananas, mashed (to make about 3/4 cup mashed); 1/3 cup poppy seeds; 1 tsp vanilla extract; 1 cup flour; 1/4 teaspoon salt; 1/2 teaspoon baking soda; lemon buttercream; 8 Tbsp (1 stick, 1/2 cup) unsalted butter, at room temperature; 2 cups confectioner's sugar; juice of 1 lemon (about 2 Tbsp); the tiniest drop of yellow food coloring (optional)