Usage: 6 forms in 7 verses
Form Translated As     In Verse(s)
ώπτησεν he roasted LXX.Isa.44.16
ώπτησαν they roasted LXX.2Chr.35.13
οπτήσωμεν let us bake LXX.Gen.11.3
οπτήσεισ bake LXX.Deut.16.7
οπτήσασ roasting LXX.Isa.44.16LXX.Isa.44.19
οπτήσαι to roast LXX.1Sam.2.15

Liddell-Scott-Jones

ὀπτάω (optaō) to bake G:V

ὀπτάω,

perfect ὤπτηκα [Refs 3rd c.BC+]: irregular participle passive ὀπτεύμενος [Refs 3rd c.BC+]: Doric dialect present participle ὀπτᾶντες [Refs 5th c.BC+]future middle ὀπτήσομαι (in passive sense) [Refs 2nd c.AD+]: aorist passive, ὀπτηθῆναι [Refs 8th c.BC+]: perfect passive ὤπτημαι [Refs 5th c.BC+]:—roast, broil, κρέα ὤπτων [Refs 8th c.BC+] roast some meat, [Refs 8th c.BC+]; broil or fry fish, [Refs 5th c.BC+]; fry an egg, [Refs 1st c.AD+]; toast cheese, [Refs 4th c.BC+] —Hence it appears that ὀπτᾶν was used of all kinds of cooking by means of fire or dry heat, opposed to ἕψω (boil in water), which never appears in [Refs 8th c.BC+], whose heroes ate only roast meat, κρέα δὲ μόνον ὤπτων, ἐπεὶ ἕψοντά γ᾽ οὐ πεποίηκεν αὐτῶν οὐδένα [Refs 4th c.BC+]

__2 bake bread, [Refs 5th c.BC+]; ὅκως ὀπτῷτο (variant{ὀπτῴη}) ἄρτος [Refs 5th c.BC+]; also of bricks or pottery, bake, burn, [Refs 5th c.BC+]
__3 bake, scorch, of the sun, ἐπεὶ τόκα μ᾽ ἅλιος ὀπτῇ [Refs 5th c.BC+]
__4 metaphorically (as we say), 'roast' a man, τοῦτον ὀπτᾶν καὶ στρέφειν [Refs 5th c.BC+]:—passive, of the fire of love, ὀπτεύμενον ἐξ Ἀφροδίτας [Refs 3rd c.BC+]: so, probably, in active, [Refs 7th c.BC+]