I have quite a few staple items that I buy every single time I go grocery shopping. Which is every two weeks, with the exception of maybe 1 or 2 times randomly in between for other fresh ingredients that I may need for a recipe. Here is what a typical shopping trip looks like for me:
Produce: Brussel Sprouts, Asparagus, Kale, Green Beans, Shredded Cabbage, Onions, Mushrooms, Avocados. ::These enter my cart every trip::
Frozen Produce: Cauliflower (for caulimash), Broccoli, Corn (if I feel like having the extra carbs).
Cold Section/Dairy: Heavy Whipping Cream, Eggs (usually x2), Shredded cheese, Sour Cream, Cream Cheese (always x2), Kerry Gold Butter.
Meats: Ground Beef, Bacon, Pork Chops, Chicken Thighs, Chicken Breast (for boiling and shredding for salad and crack slaw), Kielbasa, Sausage.
Random Items: Pickles, Olives, Low Carb Tortillas, Deli Meat (actually from the deli, not the packaged processed stuff), Coconut Oil, Ranch Dressing, Mayo, Taco Seasoning, Chicken Broth, Beef Broth.
I try to keep everything as basic as possible and then just add in other things when needed. I find it easier to create different recipes off of the basics, instead of having completely different recipes and buying ingredients accordingly. Basics save time and most importantly, MONEY!!