4 double chocolate upside down cake Recipes

unsalted butter, cut into 4 pieces, light brown sugar , tightly packed, fresh blueberries, grated lemon zest, all-purpose flour, double-acting baking powder, salt, unsalted butter, softened, sugar, eggs, at room temperature, pure vanilla extract, unsweetened coconut milk, white chocolate, coarsely chopped (callebaut is preferred)

unsalted butter, cut into 4 pieces, light brown sugar , tightly packed, fresh blueberries, lime zest, grated, all-purpose flour, double-acting baking powder, salt, unsalted butter, softened, sugar, eggs, at room temperature, pure vanilla extract, buttermilk (or sour milk-i have used sour milk made with 1/2 tsp lime juice for extra lime flavor), baking soda, white chocolate, coarsely chopped

cold butter , cut into pieces, brown sugar , packed, firm ripe bananas, orange juice, flour, baking powder, baking soda, cinnamon, nutmeg, butter, softened, sugar (can use 1/2 cup ), egg, mashed ripe banana, buttermilk, chocolate chip