I am well aware that this post will sound barking mad to many people. The idea of tinkering with a bag of peanuts, when it's so delicious on its own, and when there are so many flavoured versions out there, is plain loony. I know. I see people who wear makeup to the gym with that horrified fascination. But what can I say? This is much better than anything you can buy, and it takes about three seconds to do. You don't have to turn on the oven, so it's quick, and summer-friendly. It also costs a fraction of the price on fancy flavoured peanuts, which is the kind of thing that makes me feel clever. That's who I am. Let it go.
So, heat a basic elemental bag of salted peanuts (or almonds, cashews, whatever).
Heat a frying pan that will hold them comfortably. Now add a spoonful of garam masala. This is to taste, of course, and depends on how many peanuts there are. Suit yourself. When it smells toasty, add the peanuts, toss them until they're hot, and serve them in a pretty bowl. Everybody loves them, and they are impressive way beyond the effort they take.
You can also try different spices. A pimentón/rosemary/garlic combo is great. Just add them to the hot peanuts and toss until you can smell them. That way they won't burn. A bit of sugar at the end gives a nice little touch, although it can catch and become caramel. Not that it's a problem, just don't bite into it if it's hot.
Cold beer is a very good thing with them. Or Sherry, of course.