Blueberry Streusel Muffins

These Blueberry Streusel Muffins have a delicious crumbly streusel on top, a sugary crunchy streusel in the middle, a blueberry vanilla sauce swirled throughout and are super moist and tender.

These are the perfect muffins for breakfast or brunch! This is a classic blueberry muffin taken to the next level. Try the blueberry vanilla sauce on our homemade bubble waffle recipe!

This is definitely not your basic blueberry muffin. Let's talk about this CRUNCH in the middle. I thought it would be a nice addition to have a little texture inside the muffin. Something a little sweet that still flows nicely with the flavor profile.

So why not take something already incorporated and make it crunch? The streusel! These Blueberry Streusel Muffins have streusel two ways!

Try blueberry cornbread if you like blueberries in your baked goods!

Ingredients for Blueberry Streusel Muffins

• All Purpose Flour
• Sugar
• Kosher Salt
• Baking Powder
• Butter
• Eggs
• Vanilla Extract
• Buttermilk
• Sour Cream
• Blueberries
• Lemon Juice
• Brown Sugar
• Demerara Sugar - Also used for rolling soft molasses cookies.

Tips for the best Blueberry Streusel Muffins

• Do not over mix the muffins. This will cause dense muffins
• Let the blueberry sauce cool before adding it to the muffin batter
• If you don't have buttermilk you can make your own. Pour 2 teaspoon vinegar into the bottom of your ½ cup measuring cup. Fill the rest of the way with whole milk. Stir for 5 seconds. The milk should be thicker and possibly slightly curdled. I often do this when making my ooey gooey cinnamon rolls recipe.
• If you like a little extra crunch on the top of your muffins, sprinkle some demerara sugar on top before baking them
• To get a little extra rise and better dome top to your muffin you can chill the batter overnight. It's also nice to chill the batter overnight to help save time in the morning and just pop them right into the oven!
• Plain Greek yogurt can be substituted for the sour cream

How to make blueberry vanilla sauce

These muffins have a delicious blueberry vanilla sauce instead of the traditional whole blueberries. It brings an extra burst of blueberry flavor to these Blueberry Streusel Muffins! Making the blueberry sauce is very simple. Add the blueberries, lemon juice, sugar and vanilla to a medium sauce pot. Bring it to a boil over medium - high heat while stirring occasionally.

Turn the pot down to a simmer and cook an additional 10 minutes, stirring occasionally. Turn the pot off and set aside to cool or pour the sauce into a heatproof bowl and chill in the fridge until completely cool.

How to make the streusel

Making the streusel is very simple and straight forward. Make sure the butter is room temp, mix it together with the brown sugar and flour until well mixed. Split the mixture in half and set aside.

How to make the streusel crunch

Preheat the oven to 350°F and line a baking sheet with parchment paper. Spread one half of the mixture evenly onto the tray. Bake for 10 minutes and let cool. Break the crunchy streusel into small - medium sized pieces and set aside.

How to make Blueberry Streusel Muffins

Make the add-ins first

Make the blueberry vanilla sauce, streusel and streusel crunch ahead of time. At least 1 hour to allow for cooling but up to 2 days ahead.

Mix up the muffin batter

Preheat the oven to 425°F and grease 12 muffin liners. Melt the butter and let cool. Add the sugar to the butter and mix well. Mix in the eggs until combined. Add the buttermilk, sour cream and vanilla.

Fill the muffin tins

Scoop the batter into the muffin tins filling them about ⅓ of the way or slightly more. Sprinkle the crunchy streusel into all of the muffins evenly. Spoon the blueberry sauce into all the muffins evenly. Top with more batter until each liner is almost all the way full. Sprinkle the streusel on top of the muffins evenly and sprinkle a little demerara sugar on top if you choose.

Bake the perfect muffins

Bake the muffins at 425°F for 5 minutes. Turn the oven down to 350°F and continue baking for an additional 15 minutes. Check the muffins with a toothpick. When inserted the toothpick should come out clean or with only a few crumbs.

Take the muffins out of the oven and enjoy warm or let cool before eating! They're delicious just like that or topped with softened butter or margarine!