Blueberry Muffins Crumb Topping

Featured in Sweet Treats You'll Actually Make Twice.

Packed with zesty citrus and loaded with juicy blueberries, these muffins have a tender buttermilk base and a crunchy cinnamon topping. Each bite has the perfect mix of sweetness and tang. They’re quick to make in just 45 minutes and give you 12 muffins that taste even better after cooling. Perfect for relaxed mornings or special occasions.
A woman wearing a chef's hat and apron.
Updated on Thu, 20 Mar 2025 02:31:39 GMT
A fluffy muffin filled with blueberries and topped with crumb. Pin it
A fluffy muffin filled with blueberries and topped with crumb. | cookbybook.com

These home-style muffins are the gold standard of baking at home. Every bite gives you a soft, vanilla-rich center packed with plump blueberries, topped with a buttery cinnamon streusel that adds amazing crunch. The hint of citrus makes your kitchen smell like a fancy bakery downtown.

I spent many weekends tweaking this recipe and found that waiting two hours after they cool really brings all the flavors together. Just last Sunday, I took a batch to our block party brunch and had to tell three neighbors that no, I hadn't started selling them professionally.

Know Your Basics

  • All-Purpose Flour: Go for unbleached with 10-12% protein. Remember to fluff it up, use a spoon to fill your cup, then level it off. Good flour makes your muffins tender but still helps them dome up nicely
  • Large Eggs: Only use grade A or AA left out for 30 minutes. Cold eggs won't mix right and mess up how tall your muffins get
  • Buttermilk: Grab the full-fat kind for softness and a rich flavor. Let it warm up with your eggs
  • Fresh Blueberries: Look for firm ones with a dark blue color and slight silver coating. They should bounce a bit when dropped. Keep frozen ones in the freezer until you need them
  • Baking Powder: Pick aluminum-free and make sure it's newer than 6 months
  • Pure Vanilla Extract: Madagascar bourbon type gives the best flavor. Mexican vanilla works great too
  • Citrus Zest: Use organic oranges and lemons, grated right before mixing
  • Unsalted European-Style Butter: The extra fat (82%+) makes everything taste better. Melt it slowly
  • Fine Granulated Sugar: Cane sugar works best. You can quickly blend it for an even finer texture
  • Fine Sea Salt: Makes sure flavor spreads evenly. Diamond Crystal brand measures most reliably

Baking Your Dream Muffins

Making Great Streusel:
Start with cold butter cut tiny. Mix your dry stuff with a whisk until smooth. Work the butter in with your fingers until you see bits from pea to hazelnut size. The different sizes make it more interesting. Stick it in the fridge for at least 15 minutes while you make the batter.
Mixing It Right:
Whisk the dry stuff for a full minute to spread everything evenly. Make a hole in the middle. In another bowl, mix wet things until they flow smoothly off your whisk. Everything should be about the same temperature for best results.
Adding Berries:
Toss your berries in a bit of flour so they don't sink. Fold them in gently with a rubber spatula, no more than 12 strokes. A few streaks in the batter are better than overmixing.
Putting On Topping:
Get your cold streusel and break it into chunks with your fingers. You want some small bits and some bigger pieces. Put plenty on each muffin, pushing the bigger pieces in slightly so they stick.
A tray of muffins with blueberries in them. Pin it
A tray of muffins with blueberries in them. | cookbybook.com

My grandma always told me to leave the muffins in the pan for exactly 5 minutes before moving them to a rack. This keeps the bottoms from getting wet while letting them firm up just right.

Timing Is Everything

How long they take depends on your actual oven heat. Get an oven thermometer to be sure. Start checking at 18 minutes, but they'll probably need 22-25 minutes. Turn the pan around halfway to brown them evenly.

Ways To Enjoy Them

These taste best slightly warm, about 80°F. Serve them with some good butter, local honey, or homemade blueberry sauce. If you're having friends over for brunch, warm each muffin in the microwave for 10 seconds.

Make Them Your Way

Try adding some toasted nuts to the topping, switching to different berries, or adding spices like cardamom or nutmeg. Each change gives you something new but always delicious.

Keeping Them Fresh

Let them cool all the way, then store in a container lined with paper towels. Put parchment between layers so they don't stick. They'll stay good on the counter for three days. You can also wrap them individually and freeze for up to two months.

A blueberry muffin with a blueberry on top. Pin it
A blueberry muffin with a blueberry on top. | cookbybook.com

After tons of practice and fine-tuning, this has become my go-to breakfast treat. The soft inside, juicy berries, and buttery topping come together to make something really special that turns any regular breakfast into something people will talk about.

Frequently Asked Questions

→ Can I swap frozen berries for fresh ones?
Yep, either fresh or frozen works! You don’t need to defrost the frozen berries first.
→ How do I keep muffins soft and tender?
Don’t overmix! Stir gently until the batter just comes together—it’s okay if it’s a bit lumpy.
→ Can I prepare these a day beforehand?
Sure! Keep them in a sealed container at room temperature for up to two days.
→ Why should I cool the topping?
It helps get firm, crumbly bits and stops it from melting too fast in the oven.
→ What if I don’t have buttermilk?
No problem! Mix regular milk with 2 teaspoons of lemon juice and let it sit for a few minutes before using.

Blueberry Muffins Crumb Topping

Fluffy blueberry muffins topped with a sweet, crunchy streusel and bright pops of citrus, perfect for mornings or quick bites.

Prep Time
15 Minutes
Cook Time
30 Minutes
Total Time
45 Minutes
By: Susan

Category: Desserts

Difficulty: Intermediate

Cuisine: American

Yield: 12 Servings (12 muffins)

Dietary: Vegetarian

Ingredients

→ Crumble Topping

01 1/4 cup melted butter (unsalted or salted)
02 1/2 teaspoon cinnamon (ground)
03 1/2 cup white sugar (112g)
04 1/2 cup plain flour (72g)

→ Muffin Mix

05 2 cups blueberries (can be fresh or frozen)
06 1 large egg
07 1/4 teaspoon kosher salt
08 1/3 cup melted butter (unsalted, about 5 tablespoons)
09 1.5 cups all-purpose flour (212g)
10 2 teaspoons baking powder
11 3/4 cup sugar
12 2/3 cup buttermilk
13 Zest from 2 meyer lemons (or 1 orange and 1 lemon combined)

Instructions

Step 01

Turn your oven on and set to 375°F. Put paper liners in a muffin tray.

Step 02

Use a small bowl to combine cinnamon, sugar, and flour. Stir melted butter in with a fork until crumbly bits form. Keep it cold in the fridge.

Step 03

Take a big bowl and toss together flour, sugar, baking powder, salt, and citrus zest.

Step 04

In another bowl, mix melted butter, egg, and buttermilk. It's okay if it looks split.

Step 05

Pour the wet mix into your dry ingredients. Gently mix until it's thick and bumpy—don’t overwork it.

Step 06

Carefully fold the blueberries into the batter. Stir just enough to spread them around—overdoing it might turn your batter purple.

Step 07

Grab a 3-tablespoon cookie scoop and portion the batter into the lined muffin cups.

Step 08

Break apart the chilled topping with your fingers and sprinkle it over the batter in each cup.

Step 09

Pop them in the oven for 28-30 minutes. They're done when the topping turns golden and the muffins feel springy.

Step 10

Muffins are tasty warm, but their flavor shines after a 2-hour rest.

Notes

  1. Both fresh and frozen blueberries work fine.
  2. Customize zest with meyer lemons, regular lemons, or oranges.
  3. The batter should stay thick and clumpy—don’t overdo the mixing.

Tools You'll Need

  • Standard 12-cup muffin tin
  • Cupcake liners
  • Big mixing bowls
  • Small bowl for topping mix
  • Whisk or fork
  • 3-tablespoon cookie scoop

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Has wheat (flour).
  • Has dairy (butter, buttermilk).
  • Has eggs.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 274
  • Total Fat: 11 g
  • Total Carbohydrate: 42 g
  • Protein: 3 g