What I Buy At Costco As A Dietitian: Must Have Items

As a dietitian, I often get asked what I actually buy at Costco. Over the years, I’ve learned to focus on items that are nutrient-dense, versatile, and budget-friendly. These foods are packed with antioxidants, magnesium, complete proteins, and essential amino acids, support heart health, and make meal prep easier for busy weeks.

Whether you’re shopping for your family or just stocking up for yourself, here’s my go-to Costco shopping list.

Fruits And Vegetables

Costco has a wide variety of fresh produce, but I usually stick to items that last longer and give me the most nutrition per purchase.

Apple cider vinegar – a great addition for dressings or flavoring roasted vegetables.

Brussels sprouts – small, fresh, and perfect for quick roasting or air fryer meals.

Berries (blueberries, raspberries, strawberries) – high in antioxidants and fiber; last longer than at most grocery stores.

Pumpkin – full of magnesium, fiber, and vitamin A; great in soups, smoothies, or oatmeal.

Garlic – adds flavor and supports overall wellness.

Pantry Staples 

I focus on items that provide complete protein, healthy fats, and minerals while being cost-effective.

• Dave’s Killer Bread & Ezekiel Bread – high-fiber, whole-grain options. Perfect for toast, sandwiches, or quick snacks.
• Oatmeal & cinnamon – a fiber-rich breakfast base; adding nuts like cashews, peanuts, or Kirkland almondsboosts protein, healthy fats, and flavor.
• Nut butters (almond or peanut) – versatile for smoothies, oatmeal, or fruit.
• Whole beans – I grind some at home for fresh coffee, but canned beans are also a great addition for quick meals.
• Banza pasta, quinoa, basmati rice – store long-term and provide complete protein when combined with beans or legumes.
• Oatmeal & cinnamon – high in fiber, magnesium, and antioxidants. Add chia seeds or peanut butter for a protein and omega-3 boost.
• Nuts – Kirkland almonds, cashews, and peanuts are a convenient source of healthy fats and minerals. They make a great snack for adults and kids alike.
• Grains & gluten options – whole grains like quinoa, Banza pasta, Ezekiel bread, and oatmeal provide fiber, protein, and energy. For those avoiding gluten, Costco offers labeled gluten-free alternatives.

Frozen Foods 

Frozen foods are a lifesaver for quick, nutritious meals that last longer in your freezer.

• Sockeye salmon – sustainably sourced, 24 grams of protein per serving, and packed with omega-3 fatty acids. These healthy fatty acids support heart health and may reduce the risk of heart disease. A drizzle of olive oiladds extra flavor and nutrition.
• Frozen vegetables – full of antioxidants and fiber; convenient for stir-fries or soups. Cooking with a bit of olive oil not only adds flavor but also healthy fatty acids.
• Frozen fruits – perfect for smoothies or oatmeal; these retain peak nutrients and make it easy to get antioxidantsand fiber year-round.

Refrigerated Foods

These items are high in protein, calcium, and other essential nutrients.

• Kirkland Greek yogurt or Fage 2% Greek yogurt – loaded with protein and versatile for breakfast, snacks, or adding to smoothies.
• Cottage cheese – rich in complete protein and essential amino acids, making it perfect for a great snack or quick breakfast. If you haven’t tried my viral High-Protein Cottage Cheese Pancakes, you need to!  Click here for recipe: https://themomnutritionist.com/high-protein-cottage-cheese-pancakes
• Greek yogurt – packed with protein, calcium, and probiotics. Pair with chia seeds or fruit for a balanced meal.
• Egg whites – convenient for high-protein meals or snacks, especially for kids.
• Cow’s milk & coconut milk – staples for smoothies, cereals, or oatmeal, providing fatty acids, protein, and minerals.
• Hard-boiled eggs – ready-to-eat protein for breakfast or snacks.

Canned Goods

Canned foods are a budget-friendly, long-lasting source of protein, fiber, and minerals.

• Canned tomato sauce & Rao’s homemade sauce
• Canned chickpeas & black beans
• Canned tomato paste
• Kirkland Signature Organic Diced Tomatoes

These items are versatile for soups, stews, tacos, or salads.

Meat & Protein 

Costco offers high-quality protein options that are convenient and cost-effective.

• Seasoned rotisserie chicken – shred for soups, salads, or quick dinners; great for stable energy levels.
• Organic chicken tenderloins – portion and freeze for easy stir-fries or meal prep.
• Steaks & ground meats – high-quality protein sources to complement meals.

Snacks & Sweet Treats

Choose options with minimal added sugar and high nutritional value.

• Protein or fruit bars – read the ingredient list carefully; fruit-based bars are great additions with protein on the side.
• Simple Mills Almond Flour Crackers – pair with cheese or nut butter for a balanced snack.
• Chips & baked snacks – choose whole-grain or minimally processed varieties.
• Sweet treats – enjoy occasionally while keeping meals balanced.
• Fruit bars – natural, made with just fruit; pair with peanut butter or Greek yogurt for a great snack.
• Simple Mills Almond Flour Crackers – pair with cheese or nut butter for protein, fiber, and healthy fats.
• Chips & baked snacks – choose whole-grain options for fiber and a better nutrient profile for kids and adults.

Cooking Essentials 

Items that make cooking easier and healthier.

• Coconut oil & avocado oil –high smoke point, perfect for stir-fry or sautéing.
• Olive oil – rich in healthy fatty acids, ideal for roasting vegetables or drizzling over salads.
• Spray oils & air-fryer – convenient for low-fat cooking while keeping meals tasty.
• Chili & garlic – boost flavor and antioxidants without extra sodium.
• Air fryer – reduces fat in cooking while keeping meals tasty.
• Salt & sodium – use sparingly for flavor; check labels to avoid excess added salt.

Value-Packed Tips for Shopping at Costco

Shopping at Costco can be overwhelming, but with a few strategies, you can maximize both nutrition and valuewhile avoiding waste. As a nutritionist, I focus on foods that are nutrient-dense, versatile, and support heart health, stable energy levels, and long-term wellness. Here’s how I make the most out of every trip.

1. Plan Ahead for Smart Buys

Before heading to Costco, I always make a shopping list. Planning ensures I get all the essentials — from grains like oatmeal and quinoa to nuts like Kirkland almonds, cashews, and peanuts — without overbuying. Planning also helps me avoid foods high in added sugar or unnecessary calories, keeping meals balanced and supporting heart health.

Including frozen fruits and vegetables on your list is also key. These items are picked at peak ripeness and frozen immediately, preserving antioxidants, fiber, and nutrients. They’re perfect for smoothies, oatmeal, or stir-fries and last for months in the freezer, making meal prep much easier.

2. Buy in Bulk, Store Smart

One of the best ways to save money at Costco is by buying in bulk — but storage is essential. For proteins like salmon, chicken, and beef, I portion them into freezer-safe bags, labeled with dates. This ensures the meat stays fresh longer and provides quick, high-protein meals throughout the month.

Nuts, such as Kirkland almonds, cashews, and peanuts, can be separated into small snack bags. These are a great snack for kids or adults and help prevent overeating while keeping healthy fatty acids and protein on hand.

For breads and gluten-containing grains, freeze what you won’t use immediately. This prevents spoilage and ensures you always have a high-quality base for sandwiches or toast.

3. Mix and Match for Nutrient-Dense Meals

Creating meals with a variety of ingredients maximizes nutrition. Combining grains with beans or chia seeds with Greek yogurt gives you complete protein and essential amino acids, helping maintain stable energy levelsthroughout the day.

Add foods rich in omega-3 fatty acids, like sockeye salmon or chia seeds, along with a drizzle of olive oil, to support heart health and reduce the risk of heart disease. Including colorful vegetables and pumpkin provides antioxidants and magnesium, supporting overall wellness.

4. Snack Smart and Convenient

Costco offers plenty of convenient, nutrient-dense snacks. Pair fruit with peanut butter or Kirkland almonds for a great snack that’s perfect for kids or busy adults. Cottage cheese, Greek yogurt, and egg whites are other easy, high-protein options that can be portioned ahead of time and stored in the fridge for quick meals.

Even simple pantry staples like oatmeal topped with chia seeds or nuts provide fiber, fatty acids, and protein, keeping you full and energized between meals.

5. Check Labels and Make Informed Choices

Always read the ingredient list. Look for items with minimal added sugar and sodium, while prioritizing healthy fatsfrom olive oil, nuts, or chia seeds. Opt for whole grains, high-protein options, and foods that provide a balance of fiber, protein, and healthy fatty acids.

By following these tips, you can turn a trip to Costco into an investment in your health — saving time, money, and stress while ensuring your meals are balanced, satisfying, and nutrient-rich.

Costco Favorites for Breakfast, Lunch, and Dinner

I often get asked how I turn my Costco staples into balanced meals for the week. Here’s how I use my go-to items for breakfast, lunch, and dinner — all while keeping heart health, stable energy levels, and convenience in mind.

Breakfast

• Overnight oats with chia seeds, peanut butter, and berries – packed with fiber, complete protein, antioxidants, and omega-3 fatty acids, this meal keeps me full until lunch.
• Greek yogurt parfaits – layered with frozen fruits, Kirkland almonds, and a drizzle of honey; a great snack or breakfast option for both adults and kids.
• Egg whites or hard-boiled eggs – combined with spinach or roasted pumpkin for extra magnesium and fiber.

Lunch

• Sandwiches with Ezekiel or Dave’s Killer Bread – topped with cottage cheese, avocado, or lean meats for complete protein and essential amino acids.
• Bowl meals – quinoa or Banza pasta with roasted vegetables, canned beans, and a sprinkle of chia seeds; drizzle with olive oil for healthy fatty acids.
• Tacos – using canned black beans, rotisserie chicken, and pumpkin for a nutrient-dense and kid-friendly meal.

Dinner

• Sheet pan salmon with frozen vegetables – rich in omega-3 fatty acids, antioxidants, and minerals. Cooked with olive oil or coconut oil for flavor and heart-healthy fats.
• Stir-fries with chicken tenderloins or beef – quick to cook and perfect for freezer-friendly prep. Serve with quinoa or basmati rice for a balanced meal.
• Soups and stews – using canned diced tomatoes, tomato paste, beans, and vegetables. These are freezer-friendly and keep well, making dinner prep stress-free.

These simple meal ideas ensure that the staples you pick up at Costco aren’t just stored in the fridge or freezer — they’re transformed into quick, nutrient-packed meals for your entire family.

Tips for Shopping at Costco

• Make a shopping list to avoid impulse purchases.
• Stick to nutrient-dense foods that support heart health, stable energy levels, and long-term wellness.
• Consider calories, added sugar, and sodium when choosing packaged items.
• Buying in bulk saves time and money, even if you’re not in a large household.

Healthy Costco Hacks

• Use the air fryer to cook frozen vegetables or snacks, reducing added oils while keeping meals tasty.
• Sprinkle cinnamon on oatmeal or Greek yogurt for flavor and antioxidant benefits.
• Keep coconut milk or cow’s milk on hand for smoothies, curries, or oatmeal.
• Apple cider vinegar is a great addition to dressings or roasted vegetables.
• Use spray oils and limit salt to control sodium intake without sacrificing flavor.
• For sweet treats, pair fruit bars with Greek yogurt or nut butter for a satisfying snack that balances protein, fiber, and healthy fatty acids.

These small hacks save time, reduce waste, and make healthy Costco shopping even easier.

Final Thoughts

Costco can be an amazing resource for healthy, nutrient-rich foods if you know what to look for. From fruits, vegetables, and pantry staples, to frozen meals, dairy, meats, and snacks, the right selections make meal planning easier, save money, and support a balanced diet.

As a dietitian, I focus on items that provide complete protein, essential amino acids, and minerals while helping maintain heart health and stable blood sugar levels.

Happy shopping!

XX Ayat