Short answer: most evangelical Christians hold that the author of 2 Peter (and therefore the writer behind 2 Peter 3:10–11) is the apostle Simon Peter — Peter the son of Jonah (aka Simon Peter), one of Jesus’ original twelve disciples.

Why evangelicals commonly accept Peter as the author
– The book itself claims Petrine authorship. The opening identifies the writer as “Simon Peter” (2 Peter 1:1) and the letter appeals to eyewitness authority (compare 1:16–18).
– Early church recognition. Many early Christian writers and church fathers accepted 2 Peter as apostolic and authoritative (e.g., Irenaeus, Tertullian, Clement of Alexandria — though the letter’s acceptance was slower and debated in some circles, early testimony is significant for the traditional view).
– Apostolic authority fits the letter’s concerns. 2 Peter addresses issues (false teachers, developed eschatological reflection, pastoral exhortation) appropriate to a senior apostle speaking to the churches.
– Conservative explanations for stylistic differences. Critics note differences of vocabulary and style between 1 and 2 Peter; many evangelicals explain this by different purposes and audiences, different amanuensis (secretary), or that an older Peter would write differently than at an earlier stage of ministry.

Common critical objections and evangelical responses
– Objection: late style and apparent dependence on Jude suggest post‑apostolic authorship. Response: dependence on Jude can be explained by shared oral tradition or Jude citing a shorter form of a tradition Peter also knew; stylistic differences can be due to a secretary (an amanuensis) or to Peter’s different circumstances and aims.
– Objection: theological development and church situation imply a late date. Response: evangelicals who maintain Petrine authorship date 2 Peter in the later part of Peter’s life (often the 60s A.D.), when the church had matured and the problems addressed would be more developed.

A little about Peter (the author claimed)
– Background: fisherman from Bethsaida; brother of Andrew; called by Jesus; an eyewitness of Jesus’ ministry, transfiguration and resurrection appearances; leader among the Twelve.
– Ministry tradition: early leader in Jerusalem, later linked by tradition with ministry in Rome and martyred under Nero (traditionally crucified upside down).
– Authority: as an apostle and eyewitness, Peter’s letters carry apostolic weight, which evangelicals take seriously when interpreting passages such as 2 Peter 3:10–11.

Why authorship matters practically
– For evangelicals, apostolic authorship supports the letter’s authority and pastoral urgency: 2 Peter 3:10–11 calls believers to live holy and godly lives in view of the Lord’s coming and final judgment. Whether one emphasizes inspiration, historical apostolic authorship, or the church’s recognition of the book, the passage is treated as binding exhortation.

For further reading (evangelical/commentarial)
– Peter H. Davids, The Letters of 2 Peter and Jude (NICNT) — a careful conservative-critical treatment.
– D. A. Carson, essays and commentaries that discuss authorship and theology of 2 Peter.
– N. T. Wright and other evangelical scholars also address the pastoral and eschatological themes even where they may differ on dating.

If you want, I can summarize key evidence for Petrine authorship in bullet points, compare representative evangelical scholars on both sides, or explain the theological meaning of 2 Peter 3:10–11 in pastoral terms. Which would help most?