mince, mints

Mince or mince means to chop or cut into very small pieces--
Mince the celery and add it to the pot. 
You can learn to use a food processor to mince the chicken for this recipe.

Mince may be used figuratively, especially to describe affected daintiness in speech or walking--
He doesn't mince words; he just says what's on his mind.
She tends to mice when she wears high heels; she needs some practice.

Mints or mints ( rhymes with mince ) is the plural ( more than one ) of "mint", meaning an aromatic herb used to make medicine, candy, and toiletries--
He tried different mints in this recipe, but spearmint worked best.

Mints may be the plural of "mint", meaning a piece of candy made with mint--
Buy some mints when you stop at the store, for the dish on the counter.
I had a roll of mints and I can't find them.

Mint's is the possessive ( belonging to ) form of "mint"--
This mint's aroma is wonderful.
This mint's wrapper is torn.

Mint's may also be a contraction ( short, informal form ) of "mint is"--
This mint's very strong; I don't like it.
This mint's mine.

Mints may also be the plural of "mint", meaning a place where money is coined--
There were mints in Philadelphia, Denver, and San Francisco, many years ago.

Mints may also be the third person singular ( he, she, it ) form of "mint", meaning to coin money or print currency--
Our federal government mints the money we use every day.

Now that you know that, you can say--
"Mince the mints and sprinkle them over the top of the cookies."

Note--"minces" is the third person singular ( he, she, it ) form of "mince", meaning to cut or chop fine, or to walk or talk with affected daintiness--
She minces onions like a professional chef.