Some fluff, some porn (why are my Easter recs porn?  search bunny or eggs on Ao3, and see what happens!).  Enjoy!

Easter Adventures by snarkstark:
A determined look on his face, Peter squared his little shoulders. “I’m going to find all
the eggs.” He announced firmly, stashing the two he had in his pockets
and looking at them as if his parents would dare challenge him. “Good
luck, kiddo.” The genius beamed at him, thinking how Steve-like that
determined set of the jaw was, while Steve nodded his approval and
adored how much that ‘try and stop me’ gaze was similar to Tony’s.

The Eggvengers (Egg Babies for All) by @orbingarrow: The Avengers have a competition to see who can keep a raw egg safe the longest.  Domestic fluff ensues.

Ovo Stark-Rogers by @tari-aldarion:
rouge-winter: “Steve and Tony are paired together for a school project
where they have to take care of an Egg Baby for a week. Will they, and
most importantly their baby, survive??!”

Chocolate Bunnies and Dainty Teddies by within_a_rustic_cafe: Its Easter time and Steve persuades Tony to exchange
Easter baskets. Tony decides to add some special items, which Steve is
way more than excited for.ORSteve body worships Tony with chocolate sauce and Tony gets Steve some pretty lingerie.

Playboy by @robintcj: After The Avengers but before the events of Captain
America: The Winter Soldier, Steve is living in D.C. and working for
SHIELD. Tony is still living in Malibu, but they’re making the
long-distance thing work. Tony shows up to surprise Steve on his days
off, wearing a trench coat, high heels and a pair of black rabbit ears.Steve is confused, sure, but he’s also totally on board.

Fertile Ground by Anonymous: Fill for Cap-Ironman Kink Meme prompt:
One of those
stories where Project Rebirth makes Steve not quite human. The changes
aren’t immediately obvious and were generally kept quiet, but they lead
to some interesting sexual urges down the line.orSteve lovingly fills Tony with his eggs.

Golden Rabbit by chasingnukes:
In which Tony gets a great idea and Steve gets a pleasant surprise.