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Costco Blueberry Muffin Calories
Large, sweet, calorie-dense blueberry muffin made with flour, sugar, eggs, and dairy.
CALORIES · 100 G
GI
POTASSIUM · 100 G
FIBER · 100 G
Quick answer
1 piece (medium) of Costco Blueberry Muffin (142 g) has 579 calories. That works out to 408 calories per 100 g. It contains 78.4 g of carbs, 7.8 g of protein, 26.7 g of fat and 2.6 g of fiber. Its 17 µg of Selenium covers 31% of the Daily Value. Its glycemic index is 68 (high), so it raises blood sugar quickly.
Costco Blueberry Muffin Nutrition Facts
Selected: 1 piece (medium) · 142 g
579
KCAL / 142G
Carbs
78.4g
· 29% DV
Protein
7.8g
· 16% DV
Fat
26.7g
· 34% DV
Fiber
2.6g
· 9% DV
DV is the share of the daily value covered, on a 2,000 kcal reference diet.
Calories come from: Carbs 54% · Protein 5% · Fat 41%
Costco Blueberry Muffin nutrition facts table · 1 piece (medium) (142 g)
| Nutrient | Amount | % DV |
|---|---|---|
| Calories | 579 kcal | |
| Total fat | 26.7 g | 34% |
| Saturated fat | 7.53 g | 38% |
| Trans fat | 0.28 g | |
| Sodium | 554 mg | 24% |
| Total carbohydrate | 78.4 g | 29% |
| Fiber | 2.6 g | 9% |
| Protein | 7.8 g | 16% |
Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.
Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.
Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.
Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.
Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.
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How Many Calories in 1 Costco Blueberry Muffin?
| Serving | Amount | Calories |
|---|---|---|
| 1 piece (medium) | 142 g | 579 kcal |
| 1 ounce (medium) | 28.4 g | 116 kcal |
| 1 piece (half) | 70 g | 286 kcal |
| 100 g | 100 g | 408 kcal |
| 1 piece (small) | 100 g | 408 kcal |
| 1 serving (medium) | 142 g | 579 kcal |
| 1 piece (large) | 170 g | 694 kcal |
| 1 piece (extra large) | 200 g | 816 kcal |
| 2 piece (double) | 284 g | 1159 kcal |
Calculated from 408 calories per 100 g.
Frequently Asked Questions About Costco Blueberry Muffin
Why are Costco blueberry muffins so large?
Costco blueberry muffins are made as oversized bakery portions, with a rich, sweet batter that gives them a substantial texture. Their size can make one muffin easy to share; you can also freeze part of one for later.
Can you freeze Costco blueberry muffins?
Yes, Costco blueberry muffins freeze well when wrapped or sealed airtight. Freeze them individually so you can take out one at a time, then thaw at room temperature. Warming a thawed muffin briefly can bring back a softer texture.
How should you store Costco blueberry muffins?
Keep Costco blueberry muffins in a sealed container at room temperature if you plan to eat them soon, away from heat and moisture. For longer storage, refrigerating can slow mold, though it may make the muffin less soft.
How do you reheat a Costco blueberry muffin?
Warm a Costco blueberry muffin in the microwave in short bursts to soften it without drying it out. For a lightly crisp outside, split it and heat it in an oven or toaster oven. Let it cool briefly before eating.
Do Costco blueberry muffins contain real blueberries?
Yes, Costco blueberry muffins are made with blueberries, though the amount and form can vary by recipe and market. Some bites may have more berries than others, so an even distribution throughout the muffin is not guaranteed.
What ingredients are in a Costco blueberry muffin?
Costco blueberry muffins generally use a sweet batter made with flour, sugar, eggs, dairy, and blueberries. Recipes can differ between countries or change over time, so the exact ingredients are not identical in every Costco bakery.
Are Costco blueberry muffins baked fresh in the store?
Costco blueberry muffin preparation can vary by location, so it is not safe to assume every store mixes and bakes them from scratch on-site. Costco sells them through its bakery, but the production process may differ between markets.
How can you make Costco-style blueberry muffins at home?
For a Costco-style blueberry muffin, make a rich, sweet batter with flour, sugar, eggs, and dairy, then fold in blueberries gently. Use oversized muffin cups and avoid overmixing, which can make the crumb tough.
How long do Costco blueberry muffins last?
Costco blueberry muffins keep for a few days in a sealed container in the refrigerator, although they may dry out. Discard one if you notice mold, an off smell, or an unusual appearance, and follow the package date when available.
Are Costco blueberry muffins available year-round?
Costco blueberry muffins are a regular bakery item in many locations, but availability is not guaranteed at every warehouse or throughout the year. Bakery selections and stock can vary by store, region, and season.
Costco Blueberry Muffin Vitamins & Minerals
Vitamins
B2
0.31mg · 24% DV
B1
0.26mg · 22% DV
B12
0.5µg · 21% DV
Folate
78.1µg · 20% DV
Minerals
Selenium
17µg · 31% DV
Sodium
554mg · 24% DV
Phosphorus
149mg · 21% DV
Iron
2.98mg · 17% DV
Potassium ⭐
178mg · 5% DV
Costco Blueberry Muffin Glycemic Index
GLYCEMIC INDEX
GLYCEMIC LOAD
Accounts for portion size — a more realistic measure than GI alone.
How to Burn Off Costco Blueberry Muffin
To burn the 579 calories in 1 piece (medium) (142 g):
🚶
Walking (5 km/h)
🏃
Running (8 km/h)
🚴
Cycling
🏊
Swimming
Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.
What is Costco Blueberry Muffin?
Costco Blueberry Muffin is a large, bakery-style muffin sold at Costco, made with a sweet batter of flour, sugar, eggs and dairy, with blueberries throughout. It belongs to the generously sized café and grocery-store muffins familiar from Costco’s North American stores.
Its soft, moist crumb and sweet berry flavor make it a breakfast treat or an easy snack with coffee or tea. It is calorie-dense and mostly provides carbohydrates and fat, rather than much fibre or protein. Since one muffin can feel substantial, you can split it or save part for later; fresh fruit or plain yogurt makes a lighter-feeling pairing.
How Nutritious Is Costco Blueberry Muffin?
Nutrient density
Low
How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.
Satiety score
Low
An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.
Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.
Is Costco Blueberry Muffin Processed?
NOVA 3
Processed
1. Unprocessed
2. Minimally Processed
3. Processed
4. Ultra-Processed
NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.
Does Costco Blueberry Muffin Contain Allergens?
Contains these allergens:
Which Diets Is Costco Blueberry Muffin Good For?
Vegan
— Not suitable
Vegetarian
✓ Suitable
Gluten-Free
— Not suitable
Dairy-Free
— Not suitable
Mediterranean
— Not suitable
Paleo
— Not suitable
Whole30
— Not suitable
DASH
— Not suitable
Keto
— Not suitable
Low FODMAP
— Not suitable
Costco Blueberry Muffin Fat Profile
SATURATED
7.53g
MONOUNSATURATED
11.64g
POLYUNSATURATED
7.81g
Omega 6:3 ratio 67.1:1
Above the ideal 4:1 (67.1:1).
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Nutrition data compiled from USDA FoodData Central and scientific sources.