The phrase "a slab of cake" is correct and usable in written English.
It can be used when referring to a thick, flat piece of cake, often in a casual or informal context.
Example: "At the party, I enjoyed a delicious slab of cake topped with fresh strawberries."
Alternatives: "a slice of cake" or "a piece of cake."
Did you go to any of the panels discussing "the intertwining of sexuality, politics and protest in recent art to 'migratory tendencies' "? Or did you just wander through the "space", and gaze at the very, very rich people gazing at the art, and think it was time for a nice cup of tea and perhaps a slab of cake?
he drives out to a popular spot where bears congregate. he has brought a bait box with him, from which he pulls out, rather unexpectedly, a slab of cake.
LUNCH is a ladle of chilli with rice, cornbread, salad and a slab of chocolate cake.
Then she brought her tea and a slab of apple cake she'd made herself, without eggs or dairy.
My favourite couple in recent memory dropped in to the office with a slab of wedding cake just before they jetted off on honeymoon.
When I was a really tiny kid, a woman named Anne used to come by to cook occasionally, and the best thing she made was a slab of pound cake drowned in crème anglaise and covered with chocolate chips, which we, without much originality, dubbed Anne pudding.
On my second, the meal ended with a slab of chocolate mocha cake that was all looks and no taste.
IN the Hollins Market a slab of German chocolate cake is 65 cents at Sophia's Bakery, and the fishmongers at Johnnie's Seafood have their tables piled high with the fruit of the Chesapeake, iced down against the hot weather, great mounds of oysters and crabs and fresh fish.
Look up the recipe for "pig candy" and you'll find several variations on dipping bacon in brown sugar, grilling it, then crumbling it over a slab of dense chocolate cake.
You can top it off with a slice of pie ($2.10), a piece of cake ($2.25) or a slab of cheesecake ($3.25), or buy a whole pie ($15) or cake ($20) to take home.
Afterward, he hung out at the back of the room, forking through a slab of sugary orange-flavored sheet cake and drinking a cup of blue punch an inmate had scooped from a plastic cooler.
