"There’s always room for dessert” is a popular saying at the dinner table. “There is always room for ice cream” was cited in print in 1901. “Always room for cake” was cited in 1922. “There’s always room for dessert” has been cited in print since at least 1939.
“There’s always room for Jell-O” is a slogan that Jell-O brand gelatin has used since 1964.
18 August 1901, Cleveland (OH) Plain Dealer, “Eliza Calls Again” by W. R. Ross, pg. 6, col. 5:
And then the qhite-capped maids came again, this time bringing a huge platter of ice cream—and no matter how surfeited an appetite may be there is always room for ice cream.
4 January 1922, Ann Arbor (MI) Times News, pg. 10, col. 4:
Always Room for Cake
(Caption for the comic strip “Freckles and His Friends.”—ed.)
4 May 1939, Canton (OH) Repository, “Why Dessert Comes Last” by Truman Twill, pg. 4, col. 5:
Thus there has grown up the canard that there’s always room for dessert—that it can be packed in around the edges of the stuff which must be eaten first.
25 November 1946, Chester (PA) Times, pg. 13, col. 3 ad:
Folks always have room for dessert...if it’s a Jane Parker Fruit Cake!
(A&P Super Markets.—ed.)
17 July 1953, Augusta (GA) Chronicle, pg. D7 ad:
There’s Always Room For Dessert If It’s Libby’s Sliced
Strawberries...10 oz. Pkg. 27c
(Dixie Home Super Markets.—ed.)
OCLC WorldCat record
101 gourmet desserts for the holidays : there’s always room for dessert with Wendy Paul
Author: Wendy Paul
Publisher: Springville, Utah : Front Table Books, 
Edition/Format: Book : English