The Real Madrid-bound attacker had provided the assist for the pivotal goal in Les Bleus' 1-0 win - his cross was deflected into the Austria net by Maximilian Wober - before spurning a glorious opening to double his nation's lead, sending a one-on-one chance wide.
However, that miss was soon forgotten about when Mbappe sported a bloody nose and shirt after colliding with Danso, and he subsequently took another one for the team, coming back onto the pitch without permission and receiving a booking in order to allow Didier Deschamps to make his substitutions.
France still held out for all three points in their opening tie, but concern immediately turned to the stricken Mbappe, who immediately disappeared down the tunnel to receive treatment for his fracture.
Will Mbappe play for France today? What has Didier Deschamps said?
Bleus boss Didier Deschamps confirmed relatively quickly that Mbappe had broken his nose, although as the Frenchman did not sustain a head injury, he would not have been required to follow concussion protocol.
Such rules would have prevented Mbappe from playing against the Netherlands in Friday's second Group D match, which kicks off at 8pm local time at the Red Bull Arena in Leipzig, and a win in that match will send Les Bleus through to the last 16.
French media immediately reported that Mbappe would not be fit for the clash with the Dutch, but he has since been mended by the medics and has trained with his protective mask, made specially for him.
Deschamps faced the media on Thursday and gave the latest on Mbappe's condition and was upbeat about the 25-year-old's chances of facing the Netherlands, saying: "Everything is going in the right direction after this big shock with its consequences.
"Yesterday he went out, did a little activity. This will also be the case this afternoon. He is moving in the right direction to ensure that he is available tomorrow. He will definitely wear a mask "When, where, you have enough leaks to know."
Can Mbappe wear his mask at Euro 2024?
As Deschamps alluded to in his press conference, Mbappe will not be permitted to play without some sort of mask, and he was seen sporting a striking variation of that protective gear in training on Thursday.
The striker's aid was embellished with the blue, white and red colours of the French flag, in addition to their distinctive Gallic Rooster crest, the initials KM and the number 10 sandwiched in between two stars.
However, due to UEFA rules on medical equipment, Mbappe will not be able to face the Dutch with his training mask, as the governing body state that such gear "must be a single colour and free of team and manufacturer identification" in their official regulations.
As a result, the ex-Paris Saint-Germain attacker will only be given the green light to play with a plain covering of one colour, but the French Football Federation have apparently given assurances that they have plenty of suitable masks ready and waiting for the attacker.
Who could replace Mbappe for France?
While all the signs seem to be pointing towards Mbappe at least being part of the squad for France's clash with the Netherlands, whether Deschamps is prepared to risk him from the first whistle is another question entirely.
Luckily for the Bleus boss, he has a wealth of attacking talent at his disposal ready and waiting to step in for their stricken teammate, including all-time leading men's goalscorer Olivier Giroud.
The Los Angeles-bound veteran was Mbappe's replacement for the dying embers of the win over Austria and would be a straight swap in the final third, as his compatriot started as the number nine on Monday.
Alternatively, Randal Kolo Muani - Mbappe's former teammate at PSG - could be given the nod in the striker's spot, as could Marcus Thuram, who began on the left in France's opening group fixture.
Should the Inter Milan forward switch to a central position or be dropped completely, Bradley Barcola - who has supposedly been seen working in a front three with Giroud and Ousmane Dembele in training - could earn his full France debut, while Kingsley Coman is another option.
Following Friday's fixture with the Netherlands, Deschamps's men close out Group D against Poland at the Signal Iduna Park in Dortmund on June 25.