I love this article by the incredible Bittman about what to keep, what to ditch, and what to buy more of for your pantry. Many of his suggestions are things I already have. Tubes of tomato paste, frozen peas, and fresh parsley are all things I always like to have around. But I want to get in the habit of making more vegetable stock at home (so easy, so delicious), experimenting with bags of beans as opposed to cans, and making homemade pie crusts.
Sometimes the little things can feel like the biggest culinary successes.