Zucchini Blueberry Muffins with Oat and Almond Streusel

"These are definitely the best use I’ve found for my abundance of zucchini! They’re easy and delicious." - Emily

It's zucchini season and if you don't have a garden full of the stuff, you probably know someone who does. The first time I ever planted a garden, I planted, like, 12 zucchini plants because I had NO idea what I was doing. By August, we were eating zucchini everything, and I couldn't give the stuff away fast enough.

That must be how zucchini muffins, zucchini bread, and zucchini cake became a thing in the first place. Thrifty gardeners with mouths to feed and armfuls of zucchini probably just started adding it to everything. And, thank goodness they did. Because, zucchini muffins and zucchini bread are the most delicious summer treats.

Ingredients Needed to Prepare this Recipe

• Old-fashioned oats. Because the oats are ground in a food processor for these muffins, it's important to use oats labeled "old fashioned" not "quick cooking".
• Brown sugar. Light or dark brown sugar work equally well in this recipe.
• Almonds. Use roasted almonds, roasted and salted almonds, or raw almonds in this recipe. Or, if you don't want nuts in your streusel or are baking for someone with a nut allergy, just leave them out.
• Cinnamon. A touch of cinnamon in the streusel and in the batter adds warm flavor to these muffins that provides a delicious backdrop to the blueberries and zucchini.
• Baking powder, baking soda, and salt.
• Butter. I used salted butter for the streusel in these muffins but if you're sensitive to salt, use unsalted.
• Eggs.
• Blueberries and Zucchini. Fresh zucchini and blueberries make these muffins the perfect summer treat, but you can also use frozen blueberries if you prefer.
• Honey. The batter for these muffins is sweetened with a combination of brown sugar and honey. This combo adds flavor and moisture, working with the zucchini and blueberries to keep the muffins incredibly moist for days.
• Vegetable Oil. Using oil in muffins helps ensure that they'll stay soft and fresh tasting for several days if kept in the refrigerator.
• Whole wheat and all-purpose flour. All-purpose flour creates a soft, tender crumb and keeps the muffins from being too dense while whole wheat flour adds flavor and a bit of fiber.
• Vanilla extract. Be sure to use pure vanilla extract in these muffins. Imitation vanilla can add a bitter aftertaste.
• Optional - almond extract. I love to add a bit of almond extract to the batter for these muffins but this is 100% optional.

Additions and Substitutions

Like most muffin recipes, this one can easily be adapted to your personal tastes and dietary requirements. Here are a few suggested additions and substitutions:

• Not a fan of cinnamon? Leave it out entirely or substitute a bit of nutmeg, ginger, or cardamom.
• To make these muffins nut-free, simply leave the almonds out of the streusel and don't add the almond extract to the muffin batter.
• Instead of almonds, use pecans, walnuts, or hazelnuts.
• Instead of or in addition to blueberries, toss in some fresh raspberries, blackberries, or any other kind of berry you like in any combination. Aim for about 12-14 total ounces (2 ½ cups) of berries.
• To make carrot blueberry muffins instead of zucchini blueberry muffins, simply swap out the grated zucchini for the same amount of grated carrot. There's no need to squeeze out excess water from carrots.

Step-by-Step Photos and Instructions

Zucchini adds a tremendous amount of moisture to baked goods. Which is good... up to a point. If you don't sop up some of the water in shredded zucchini before adding it to the batter, your muffins will not hold together. They will also have a very distinct vegetable taste. And, yes, you are adding vegetables to muffins, but, you don't want them to actually taste like a salad.

So, before you get started mixing up the batter for these muffins, grate the zucchini and squeeze out the excess water.

• After shredding your zucchini, spread it all out onto a clean kitchen towel, roll it up and twist with all your might. You might want to do this over the sink because water will literally drip from the towel as you twist.
• You can also press another kitchen towel over the zucchini to sop up the moisture. Just make sure you press out as much water as you can.

Add all of the streusel ingredients except the butter to a medium size bowl and give it a stir. Pour in the melted butter and use a rubber spatula (or your fingers) to mix the butter into the dry ingredients. Cover the bowl and set it aside while you make the muffin batter.

Add brown sugar, honey, vegetable oil, eggs, vanilla, and almond extract to a medium size bowl and whisk until everything is combined.

In another bowl, add the all-purpose and whole wheat flour, ground oats, cinnamon, salt, baking powder, and baking soda and stir to mix everything up.

Add the wet ingredients to the dry ingredients and stir just until all the dry ingredients are moistened.

Stir the shredded zucchini into the muffin batter.

Toss the blueberries with a bit of all-purpose flour and gently stir them into the batter.

Distribute the batter among 12 tulip baking paper cups or 24 regular paper baking cups.

Top the muffin batter with streusel, squeezing the streusel with your fingers to form clumps.

Time to bake!

How to Store These Muffins

Store zucchini blueberry muffins in an airtight container, or individually wrapped, at room temperature for up to 3 days or in the refrigerator for up to 5 days. Be sure to allow them to cool completely before wrapping them up or popping them into a container.

I especially love to store these muffins in the refrigerator because they are just as good cold as they are warm from the oven. I might even like them a little bit better cold from the fridge, especially in the morning with a hot cup of coffee. There's so much zucchini and blueberries in there that they stay moist and tender when cold even though this is not true about most muffins.

Zucchini Blueberry Muffins can also be frozen for up to 3 months. I like to wrap them individually when freezing for two reasons:

1. Individually wrapped muffins are less likely to get freezer burn
2. It's super easy to pull an individually wrapped muffin from the freezer and toss it into your bag when rushing out the door in the morning and don't have time for breakfast now but know you'll want something later.

More Recipes for Blueberry Lovers

This delicious Blueberry Loaf Cake is one of the many flavor variations that begin with my favorite Vanilla Loaf Cake recipe. The loaf can be made with fresh or frozen blueberries and has a buttery, tender crumb that practically melts in your mouth.

My favorite homemade double-crust blueberry pie includes a rich blueberry filling that's thick enough to hold its shape when sliced as opposed to a fruit filling that runs all over the place the second you slice it.

Blueberry crumb cake is one of those treats that's just as perfect for breakfast as it is for dessert. The cake includes blueberry sauce swirled into tender butter cake that's topped with a generous layer of New York style crumbs. It's sweet and buttery, and so delicious.

And you simply must try these blueberry corn muffins and thick blueberry pancakes for breakfast at least once this summer. Although, around our house, we're more likely to eat blueberry pancakes and corn muffins for dinner than we are for breakfast because breakfast for dinner is one of my favorite things. ♥️

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Happy baking!