Steps with hot steel moulded into these? (8,5)

I believe the answer is:

stiletto heels

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'these?' is the definition.
The definition suggests an adverb but the answer is not.

'steps with hot steel moulded' is the wordplay.
'steps' becomes 'stile' (I've seen this in other clues).
'with' is a charade indicator (letters next to each other).
'moulded' is an anagram indicator.
'hot'+'steel'='hotsteel'
'hotsteel' anagrammed gives 'ttoheels'.
'stile'+'ttoheels'='STILETTO HEELS'

'into' is the link.

Can you help me to learn more?

(Another definition for stiletto heels that I've seen is " What give height to women's shoes".)

I've seen this clue in The Telegraph.

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