Two adverbs in a row?

I prefer sentences that get straight to the point.

You could just say," Something is easy to accomplish because" ( note that I removed the comma after accomplish)

You should also notice that I removed "rather" from your sentence. It does not add much value or meaning.

You should also be more specific in your sentences. What is that " something" that you are referring to

maelstromIs it correct to say "something is rather easier to accomplish, because..."?

It is. But 'easier' isn't an adverb (It's an adjective), so you don't have two adverbs in a row — though the -er ending serves as a stand-in for 'more', so through some tortured logic perhaps you do have two adverbs in a row — sort of.