"What do you call a group of Jewish…

Filet mignon (a cut of steak) has nothing to do with a minyan (a quorum of ten Jewish adults required for certain religious obligations), but there are jokes.

“FILET MINYAN WITH MUSHROOM SAUCE” was printed in The French-Kosher Cookbook (1964) by Ruth Grossman and Bob Grossman.

“Q. What do you call steaks ordered by 10 Jews? A. Filet minyan” was printed on the newsgroup alt.humor.jewish on February 4, 2000. “What do you call steaks ordered by 10 Jews? Filet minyan” was printed in the Jewish Advocate (Boston, MA) on May 3, 2001. “What do you call a group of Jewish cows? Filet Minyan” was posted on Reddit—Jokes on February 4, 2022.

“What do you call a steak made of little yellow guys?”/“A filet minion” and “What’s a tired dragon’s favorite steak?”/“Flamin’ yawn” are other filet mignon jokes.

Wikipedia: Filet mignon
Filet mignon (/ˌfiːleɪ ˈmiːnjɒ̃/; French: [filɛ miɲɔ̃]; lit. ‘“tender, delicate, or fine fillet”’ ) is a steak cut of beef taken from the smaller end of the tenderloin, or psoas major of the cow carcass, usually a steer or heifer. In French, this cut is always called filet de bœuf (“beef fillet”), as filet mignon refers to pork tenderloin.

Wikipedia: Minyan
In Judaism, a

(Hebrew: מניין \ מִנְיָן minyán [minˈjan], lit. (noun) count, number; pl. מניינים \ מִנְיָנִים‎ minyaním [minjaˈnim]) is the quorum of ten Jewish adults required for certain religious obligations. In more traditional streams of Judaism, only males 13 and older may constitute a minyan; in more liberal (non-Orthodox) streams women are also counted.

Google Books
The French-Kosher Cookbook
By Ruth Grossman and Bob Grossman
New York, NY: Galahad Books
1964
Pg. 33:
FILET MINYAN WITH
MUSHROOM SAUCE

Newspapers.com
29 May 1966, Minneapolis (MN) Tribune, “Chinese Kosher Cooking! Would You Believe French!,” Entertainment and the Arts sec., pg 3, col. 6:
By the time they got to the third book, the authors gave up any pretense that their grandmother, now 83, had done the research, and they admit that such dishes as Knish Lorraine, Filet Minyan with Mushroom Sauce, Chicken B’nai B’rith, Shicker Chicken Kiev (stuffed with margarine instead of butter) and Fahpitzt Filet of Sole Meuniere are all of their own invention.

Google Groups: alt.humor.jewish
jokes
Tampamom
Feb 4, 2000, 3:00:00 AM
Q. What do you call steaks ordered by 10 Jews?
A. Filet minyan.

Google Groups: alt.humor.jewish
Passover jokes
Louis Agre
Apr 6, 2000, 3:00:00 AM
(...)
Q: What do you call steaks ordered by 10 Jews?
A: Filet minyan

3 May 2001, Jewish Advocate (Boston, MA), “Jewish Humor’s Coming of Age” by Susie Davidson, pg. 8:
What do you call steaks ordered by 10 Jews? Filet minyan.

Twitter
Andres
@Passionate4Food
What do you call a steak ordered by ten jewish people….. Filet minyan :p
4:52 PM · Dec 30, 2009·Twitter SMS

Twitter
Siegal College
@siegalcollege
Q: What do you call steaks ordered by 10 Jews? A: Filet minyan!
11:46 AM · Feb 28, 2010·Twitter Web Client

Twitter
Erica Goldman
@ReadDanceBliss
RT @AlyssaDanielleL: What do you call 10 jewish men ordering steaks? Filet minyan.
11:48 AM · Jul 17, 2010·Twitter Web Client

OCLC WorldCat record
Filet minyan cookbook
Author: Sherry Leffert; Harvard-Radcliffe Hillel Society. Worship and Study Minyan.
Publisher: [Cambridge, MA] : Worship and Study Minyan, [201-?]
Edition/Format: Print book : English

Twitter
Havurah on the Hill
@HOHatVilnaShul
Q: What do you call a group of 10 Jews eating steaks? A: Filet minyan.
4:43 PM · Jan 14, 2011·Twitter Web Client

Twitter
Michael Scott
@mdscott
Replying to @patscousin
@patscousin If 10 men gather to eat tenderloin is it a filet minyan?
8:37 PM · Mar 10, 2011·TweetDeck

Twitter
Daily Jewish Facts
@DailyJewishFact
Q: What do you call a steak ordered by 10 Jews?
A: Filet minyan.
10:50 AM · May 9, 2011·Twitter Web Client

Twitter
Yitz Grossman
@YitzGrossman
What do you call steaks ordered by 10 Jews?
Filet minyan.
3:31 PM · May 11, 2011·TweetDeck

Twitter
Stella and Sam
@TheKosherCucina
What do you call 10 Jewish Steaks? A filet Minyan!
3:27 PM · Sep 16, 2011·Twitter Web Client

Twitter
Birthright Israel
@birthright
What do you call steaks ordered by 10 Jewish people? Filet minyan. #BadJoke
1:49 PM · Aug 23, 2012·TweetDeck

Twitter
Craig R
@CFR624
What did the rabbi order at the steakhouse? The filet minyan
1:49 PM · Apr 28, 2013·Twitter for iPhone

Twitter
Elise Titiner
@elisenicole41
What are the steaks ordered by 10 jewish men called?
Filet minyan #jewishjokes
8:16 PM · Aug 27, 2013·Twitter for iPhone

Twitter
Ruchel
@Ruchel3BC
What do you call steaks ordered by 10 Jewish men? Filet Minyan. #ShabbatShalom
9:08 PM · May 23, 2014·Twitter for iPhone

Twitter
Bob Kostic
@causticbob
Q: What do you call steaks ordered by 10 Jews?
A: Filet minyan
happy passover
5:13 PM · Apr 22, 2016·Twitter Web Client

Twitter
Modern Talmud
@ModernTalmud
What do you serve at a socially distanced BBQ with ten Jewish men?
Backyard filet minyan.
11:43 AM · Jul 5, 2020·Twitter Web App

Reddit—Jokes
Posted by u/ThatGuyQuentinPeak February 4, 2022
What do you call a group of Jewish cows?
Filet Minyan
COMMENTS
Buddy2269
Explain?
>ThatGuyQuentinPeak
A group of ten plus Jewish men together praying is called a minyan and we pronounce filet mignon “filet minyan”

“What do you call a group of Jewish cows?”/“Filet Minyan.”