One IV, two DVs, across male/female. What could I use?

I know I've been posting a lot here lately, this is my last one:
I have one independent variable (categorical) and want to determine its effect on two separate dependent variables. I know I could use MANOVA for this.
But what do I use if I want to determine the effect of an independent variable on two dependent variables and see whether it's stronger for females than for males? Two-way MANOVA?
(Basically if the effect of scoring above a cutoff on the IV has a stronger effect on both DVs for females than for males)
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