I don’t have the recipe but my ex-wife makes cookies that have a ridiculous amount of m&ms in them. I’d be willing to bet the batter was 30-40% m&ms (and some chocolate chips). Of course, I really really like m&ms.
I think it’s very much a “his mileage may vary” sort of thing. For instance, my husband doesn’t like peanut butter cookies, he likes chocolate chip, and he will do amazing feats for iced oatmeal cookies with raisins in them.
Peanut butter and oatmeal are risky. A lot of people don’t like one or the other, or both. If you’re still in ‘shopping’ mode that’s ok, but if you have a chosen target already, you don’t want to freak him out until you’ve intrigued him and opened his mind sufficiently. Then you can break out the metaphorical cookie handcuffs.
Hanaford’s, a NE supermarket chain, has perfected the black and white cookie. Instead of the bland yellow cake that normal black&whites use, they use chocolate cake. Not chocolate, chocolate. With goopy white icing and crusty* chocolate *icing. And as they don’t seem to have any branches in Texas, so he probably hasn’t had them before.
Those are sort of cookie-like. Blondies are another good option, a suprising number of people have never had them, and they’re awesome.
Aside from those, I’ve got nothing.
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Delivering them in a maid or supervillian costume wouldn’t hurt, either.
I’m not sure this is the exact recipe I’ve used before, but these white chocolate and macadamia nut cookies are apparently better than sex. You can tell him that this is the claim, at least. If only there were some way to test it.
I have an easy recipe for double-chocolate (or even triple-chocolate) cookies that taste wonderful. If he is like my husband and worships chocolate, I can post the recipe.
It’s going to be the cookies he remembers his mom or grandmother making when he was a little boy. For me, it’s snickerdoodles. Objectively (if that makes sense) chocolate chip cookies should be better, and tey are good. But make me snickerdoodles and I’m 8 years old again.
You’re going to need to do some research on your own. The answer you seek won’t be found on a message board.
(And yes, my wife makes snickerdoodles the way my grandmother did. Although I didn’t know that when I married her, I just got lucky.)