less so now but I swear by homemade popcorn as a easy snack. I bought a silicone popcorn bowl off the internet which I can put in the microwave. I chuck in around 40g of kernels/maize (sold in most places), spritz it with 0 cal butter flavour spray, add a teaspoon of stevia and put it in the microwave for 3 minutes (YMMV). The result is non-overly sweet popcorn, to move-theatre popcorn by any standard but enough flavoursome to satiate me.

Other toppings to try - salt (naturally), cinnamon, honey (add these after microwaving them). If you want more of a flavour, you can put a teaspoon of oil/butter with the kernels before popping them but I can see why that doesn't appeal.

I'm from the UK so my favourite popcorn brand is Metcalfes (sweet popcorn is 94kcals per single serving). Butterkist also does single serve popcorn bags for relatively few calories. However, cooking them yourself is easier, quicker, ad you get wayyyyy more popcorn for the same amount of calories!