Ich erhitze die Pfanne und gieße den Teig langsam hinein.

and

Breakdown of Ich erhitze die Pfanne und gieße den Teig langsam hinein.

• ich: I
• langsam: slowly
• erhitzen: to heat

Questions & Answers about Ich erhitze die Pfanne und gieße den Teig langsam hinein.

Which cases are used for the nouns here, and why is it den Teig but die Pfanne?

Both are accusative because they are direct objects of transitive verbs.

• die Pfanne: feminine; nominative and accusative are both die.
• den Teig: masculine; nominative der, accusative den. Hence den Teig after gießen.

Could I say in die Pfanne instead of hinein? What’s the difference?

Yes. Ich gieße den Teig langsam in die Pfanne is very natural.

• hinein means “into it/inside,” pointing back to a container already mentioned (the pan).
• in die Pfanne names the destination explicitly. Using both is possible but emphatic: in die Pfanne hinein.

Is hinein part of a separable verb with gießen?

It can be. The compound is hineingießen (separable).

• Main clause: Ich gieße den Teig langsam hinein.
• Subordinate clause: …, weil ich den Teig langsam hineingieße.
• Perfect: Ich habe den Teig langsam hineingegossen. This is the typical “sentence bracket” behavior in German.

Where should langsam go? Is langsam hinein the preferred order?