upside-down cake

US /ˈʌpsaɪd daʊn keɪk/
UK /ˈʌpsaɪd daʊn keɪk/
"upside-down cake" picture
1.

a cake baked with the topping (usually fruit) at the bottom of the pan, so that when the cake is inverted after baking, the topping is on top

:
My grandmother makes the best pineapple upside-down cake.
She carefully flipped the warm upside-down cake onto a serving plate.