10 Costco Protein Powerhouses That Can Help You Drop Body Fat in 30 Days

When it comes to losing body fat without sacrificing flavor or satisfaction, protein is your best friend. Dietitians often recommend aiming for around 30 grams of protein per meal or snack to help preserve lean muscle and keep you feeling full longer. Costco makes it easy to hit those targets with budget-friendly, bulk-sized protein sources that fit into a healthy eating plan. Here are 10 high-protein items you can find at Costco that make staying on track with your goals easier—and more delicious.

1. RXBar Protein Bars $18.99/25 oz

Made with just a handful of whole-food ingredients, RXBars are a clean protein source perfect for busy days. Each bar is free of artificial sweeteners and packed with protein from egg whites and nuts.

Nutritional Facts

• Calories 210
• Fat 9g
• Carbs 23g
• Sodium 125mg
• Dietary Fiber 5g
• Sugar 13g
• Protein 12g

Ingredients

Dates, egg whites, almonds, cashews, natural flavors, cocoa, sea salt.

Preparation Instructions

Unwrap and enjoy as a grab-and-go snack or pair with coffee for a filling breakfast.

2. Chicken (Fresh or Rotisserie) $5.99/lb

Whether you choose freshly cooked rotisserie chicken or raw chicken breast to prepare at home, Costco’s poultry options deliver lean, versatile protein for any meal.

Nutritional Facts

• Calories 180
• Fat 7g
• Carbs 0g
• Sodium 320mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 28g

Ingredients

Chicken breast (seasoning added for rotisserie variety salt, spices, natural flavor).

Preparation Instructions

For fresh chicken, season and grill, bake, or sauté until fully cooked (165°F internal temp). For rotisserie, shred or slice for salads, wraps, or quick dinners.

3. Kirkland Signature Organic Greek Yogurt $6.79/48 oz

Thick, creamy, and loaded with probiotics, this Greek yogurt provides a protein punch perfect for breakfast or snacks. Add fruit, nuts, or seeds for even more nutrients.

Nutritional Facts

• Calories 130
• Fat 0g
• Carbs 9g
• Sodium 60mg
• Dietary Fiber 0g
• Sugar 6g
• Protein 23g

Ingredients

Organic cultured pasteurized skim milk, live active cultures.

Preparation Instructions

Enjoy plain or mix with berries, chia seeds, or nut butter for a balanced meal.

4. Wild-Caught Salmon Fillets $24.99/48 oz

These skin-on, boneless fillets are rich in omega-3 fatty acids and offer a premium protein source for heart-healthy meals.

Nutritional Facts

• Calories 240
• Fat 13g
• Carbs 0g
• Sodium 90mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 27g

Ingredients

Wild-caught salmon.

Preparation Instructions

Bake at 400°F for 12–15 minutes or grill for 8–10 minutes until flaky and opaque.

5. Other Meat and Game (Pork, Beef, Lamb, Game) Price varies $6.99–$12.99/lb

Costco’s fresh meat section includes lean cuts of pork, beef, lamb, and even specialty game meats—perfect for high-protein, low-carb meals.

Nutritional Facts

• Calories 200
• Fat 10g
• Carbs 0g
• Sodium 70mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 26g

Ingredients

Varies by meat selection—100% meat with no fillers for most cuts.

Preparation Instructions

Season and grill, roast, or pan-sear to your preferred doneness.

6. Freezer Meats (Frozen Pre-Portioned Proteins)  $22.99/ 6 lbs

From wild Alaskan salmon to grass-fed beef burgers, chicken breasts, and turkey burgers, Costco’s frozen pre-portioned proteins make meal prep simple and efficient.

Nutritional Facts

• Calories 120
• Fat 2g
• Carbs 0g
• Sodium 60mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 26g

Ingredients

Varies—usually just the protein source (seasoned or unseasoned).

Preparation Instructions

Cook directly from frozen or thaw overnight before grilling, baking, or pan-searing.

7. Nuts and Seeds $12.99/2.5 lbs

While not the highest protein source on their own, nuts and seeds are excellent for adding extra protein, fiber, and healthy fats to meals.

Nutritional Facts

• Calories 160
• Fat 14g
• Carbs 6g
• Sodium 0mg
• Dietary Fiber 3g
• Sugar 1g
• Protein 6g

Ingredients

Raw or roasted nuts/seeds (almonds, walnuts, chia seeds, pumpkin seeds, etc.).

Preparation Instructions

Enjoy as a snack or sprinkle over yogurt, salads, and oatmeal.

8. Eggs $4.29/36 oz

Eggs are a nutrient-dense powerhouse, offering complete protein along with essential vitamins and minerals.

Nutritional Facts

• Calories 70
• Fat 5g
• Carbs 0g
• Sodium 70mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 6g

Ingredients

Whole eggs.

Preparation Instructions

Boil, scramble, poach, or bake—perfect for breakfast or as a protein boost in salads.

9. Kirkland Signature Wild Smoked Sockeye Salmon $29.99/16 oz

This rich, smoky salmon is ready to eat and delivers an impressive protein boost with every serving.

Nutritional Facts

• Calories 120
• Fat 4g
• Carbs 0g
• Sodium 600mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 19g

Ingredients

Wild sockeye salmon, salt, natural wood smoke.

Preparation Instructions

Serve chilled on whole-grain crackers, in wraps, or over salads.

10. Busseto California Snackin’ Bite Size Salami & Provolone Cheese $13.99/32 oz

A ready-to-eat snack pack combining savory salami and creamy provolone cheese, perfect for keeping hunger at bay between meals.

Nutritional Facts

• Calories 280
• Fat 23g
• Carbs 2g
• Sodium 920mg
• Dietary Fiber 0g
• Sugar 0g
• Protein 18g

Ingredients

Pork salami (pork, salt, spices), provolone cheese (milk, enzymes, salt).

Preparation Instructions

Enjoy straight from the fridge for a quick protein hit on the go.

Final Thoughts

High-protein foods don’t just help you feel full—they also support muscle maintenance and fat loss, making them a crucial part of any weight-loss plan. Costco’s bulk deals make it easier (and more affordable) to stock up on top-quality protein sources you can enjoy in a variety of ways. From easy grab-and-go snacks like RXBars and Busseto Snack Packs to meal staples like chicken, salmon, and Greek yogurt, these 10 picks offer flexibility, great taste, and the nutritional punch needed to hit your protein goals. If you’re serious about dropping body fat in the next month, these items are worth adding to your cart on your next Costco run.