I've been cooking fresh a lot more often recently thanks to Fresh 20 meal planning. The only problem is, even with the gift of meals for one (or two when I'm feeding Jarrod) and meals that use the same ingredients over several recipes, I end up with fresh ingredients that if left in the fridge will go bad. So, I've been freezing a lot. Please note, I cook with all of my frozen veggies. MMV on thawing out and expecting a grocery store fresh result. This is going to sounds dumb, but, been there done that. Cut up your fruit/vegetable/food item BEFORE you freeze. I once froze a bunch of apples and was very disappointed that I had frozen rock apples that I couldn't do anything with.
Meat:
If you're a single lady like me, a great way to save money is to buy the family sized meat packs (think 5 lb. ground turkey) and cut into individual sized servings BEFORE you freeze. I like cut into commonly used portion sizes. For instance, a 5 lb. log of ground meat I'd cut up into 1 lb. serving sizes, package them in freezer bags and throw all the small freezer bags into a gallon size freezer bag.
Fruits:
Bananas - learned this from mom. Frozen bananas are great for use in breads and muffins. I imagine they'd also be good for smoothies, though I'm not really an at home smoothie girl.
Veggies:
Kale - cooked with some frozen kale the other day and it turned out awesome.
Carrots
Onions - I always buy the big bag and chop up as much as I can and freeze. It sure beats having to chop onion every night.
Garlic
Dairy:
All sorts of shredded cheeses
Add to the list! What do you like to freeze?