Costco Poppyseed Muffin Recipe

This Costco Poppyseed Muffin Recipe is a soft and jumbo recipe, which is made with poppy seeds and buttermilk. It’s the perfect breakfast treat, ready in about 40 minutes.

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Costco Poppyseed Muffin Recipe Ingredients

• 2 1/4 cup all-purpose flour
• 1 cup + 2 Tbsp. granulated sugar
• 2 Tbsp. poppy seeds
• 1 tsp. fine sea salt
• 2 tsp. baking powder
• 1/2 tsp. baking soda
• 1/2 heaping cup full fat sour cream, room temperature
• 3/4 cup buttermilk, room temperature
• 3/4 cup vegetable oil
• 2 large eggs, room temperature
• 2 tsp. almond extract
• 1 tsp. vanilla extract

How To Make Costco Poppyseed Muffins

1. Prep the Oven and Pan: Preheat the oven to 400°F. Line a 6-count jumbo muffin tin with jumbo paper liners and set it aside.
2. Combine Dry Ingredients: In a large mixing bowl, whisk together the flour, sugar, poppy seeds, salt, baking powder, and baking soda until well combined.
3. Whisk Wet Ingredients: In a separate medium bowl, whisk together the sour cream, buttermilk, vegetable oil, eggs, almond extract, and vanilla extract until the mixture is smooth.
4. Make the Batter: Pour the wet ingredients into the bowl with the dry ingredients. Gently fold with a spatula until just combined. The batter will be thick; do not overmix.
5. Fill and Bake: Spoon or scoop the batter into the prepared jumbo muffin liners, filling them almost to the top.
6. Bake with Two Temperatures: Place the muffins in the oven and bake at 400°F for 5 minutes. Then, without opening the oven door, reduce the temperature to 350°F and continue to bake for another 24 to 26 minutes, or until a toothpick inserted into the center comes out clean.
7. Cool and Serve: Let the muffins cool in the pan for 5 to 10 minutes before carefully removing them to a wire rack to finish cooling. Enjoy them warm or at room temperature.

Recipe Tips

• How do I get the perfect muffin dome? The two-temperature baking method is the secret. The initial high heat of 400°F causes the batter to rise rapidly, creating that big, bakery-style dome. Reducing the heat to 350°F then allows the inside of the muffin to cook through without the outside burning.
• Why use room temperature ingredients? Using room temperature sour cream, buttermilk, and eggs is crucial for a smooth, lump-free batter. It allows the ingredients to emulsify properly, which results in a more tender and evenly baked muffin.
• How do I avoid tough muffins? The most common cause of tough muffins is overmixing the batter. Once you combine the wet and dry ingredients, fold them together gently with a spatula only until you no longer see streaks of flour. A few lumps in the batter are perfectly fine.
• Can I use something besides buttermilk? Yes. If you don’t have buttermilk, you can make a quick substitute. For 3/4 cup of buttermilk, pour 3/4 tablespoon of lemon juice or white vinegar into a liquid measuring cup, then add enough milk to reach the 3/4-cup line. Let it sit for 5-10 minutes.

What To Serve With Costco Poppyseed Muffins

These jumbo muffins are a delicious breakfast or snack on their own, but they are also wonderful with:

• A generous spread of salted butter.
• A dollop of lemon curd or your favorite jam.
• A hot cup of coffee or tea.

How To Store Costco Poppyseed Muffins

Room Temperature: Store completely cooled muffins in an airtight container for 2 to 3 days. Refrigerated: To extend their freshness, store them in an airtight container in the refrigerator for up to 1 week. Frozen: These muffins freeze very well. Wrap each muffin tightly in plastic wrap and store them in a freezer-safe bag for 2 to 3 months. Thaw at room temperature or warm gently in the microwave.

Costco Poppyseed Muffins Nutrition Facts

• Calories: 418kcal
• Protein: 9g
• Fat: 5g
• Carbohydrates: 84g
• Sugar: 46g

Nutrition information is estimated and may vary based on ingredients and cooking methods used.

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