Where should we put our savings/extra money?

We make $6-$7k a month, we have a mortgage of $300k and we pay $1,550 bi-weekly, that’s our only debt. Food $1,500 a month. I’m wanting to see if there’s a good advice we can follow on where we should put our extra money apart from saving them. We do put $1,000 a month on savings and we have $10k on savings so far. I just want to see if there’s a way to grow our savings since we both know putting money on our checking account and treating it as savings doesn’t grow at all. We are 27 and 32 years old.

Anybody out there that can help us out on what to do?