Tasty Strawberry Banana Oat Muffins

Finding a tasty way to use up those overripe bananas sitting on your counter can feel like a never-ending puzzle. Sure, you could make plain banana bread for the hundredth time, but sometimes you want something a little different that still comes together quickly and uses ingredients you already have in your kitchen.

That’s where these strawberry banana oat muffins come in handy: they’re naturally sweet from the fruit, satisfying with a crunchy oat topping, and perfect for breakfast, snacks, or even dessert. Plus, they’re a great way to sneak some fruit into your day without feeling like you’re trying too hard.

What Kind of Strawberries Should I Use?

Fresh strawberries are definitely the way to go for these muffins, and you’ll want to look for berries that are firm and bright red without any mushy spots. If fresh strawberries aren’t in season, frozen strawberries can work in a pinch – just make sure to thaw them completely and pat them dry with paper towels to remove excess moisture. When you’re prepping your berries, cut them into smaller pieces rather than leaving them whole so they distribute evenly throughout the muffins. Tossing your strawberry pieces in that tablespoon of flour before folding them into the batter will help prevent them from sinking to the bottom while baking.

Options for Substitutions

These muffins are pretty forgiving, so here are some swaps you can make:

• Butter: You can replace the butter with coconut oil or vegetable oil in equal amounts. If using oil, the muffins will be slightly more moist but won’t have that buttery flavor.
• Granulated sugar: Feel free to use coconut sugar or reduce the amount to 3/4 cup if you prefer less sweetness. The bananas already add natural sweetness to these muffins.
• All-purpose flour: Whole wheat flour works well here – try replacing half or all of the flour for a heartier texture. You can also use a 1:1 gluten-free flour blend if needed.
• Strawberries: Swap these with blueberries, raspberries, or chopped peaches. Frozen berries work too – just don’t thaw them before folding into the batter to prevent color bleeding.
• Bananas: The bananas are really important for the texture and moisture of these muffins, so I wouldn’t recommend substituting them. Make sure they’re nice and ripe with brown spots for the best flavor.
• Eggs: For each egg, you can use 1/4 cup applesauce or a flax egg (1 tablespoon ground flaxseed mixed with 3 tablespoons water, let sit for 5 minutes).

Watch Out for These Mistakes While Baking

The biggest mistake when making these muffins is overmixing the batter once you add the flour, which can lead to tough, dense muffins instead of light and fluffy ones – mix just until the dry ingredients are incorporated and you still see a few streaks of flour.

Another common error is skipping the step of tossing your strawberries in that tablespoon of flour before folding them in, as this prevents them from sinking to the bottom and creating soggy spots in your muffins.

Don’t forget to mash your bananas really well (they should be almost liquid) because large chunks won’t distribute evenly and can throw off the texture of your muffins.

Finally, resist the urge to open the oven door during that initial high-heat bake at 425°F, since the temperature drop can prevent your muffins from getting that nice domed top.

What to Serve With Strawberry Banana Oat Muffins?

These muffins are perfect for breakfast or brunch alongside a hot cup of coffee or a glass of cold milk. I love serving them with a simple fruit salad made with whatever berries are in season, or even just some sliced bananas with a drizzle of honey. They also pair nicely with Greek yogurt and a sprinkle of granola if you want something more filling. For a weekend brunch spread, set them out with scrambled eggs and crispy bacon for a mix of sweet and savory that everyone will enjoy.

Storage Instructions

Store: Keep your muffins in an airtight container at room temperature for up to 3 days, or in the fridge for up to a week. I like to line the container with a paper towel to absorb any extra moisture from the fruit so they stay nice and fresh.

Freeze: These muffins are perfect for freezing! Let them cool completely, then wrap each one individually in plastic wrap and store in a freezer bag for up to 3 months. It’s great to have a stash ready for busy mornings or quick snacks.

Enjoy: Thaw frozen muffins overnight in the fridge, or just leave them on the counter for about an hour. If you want them warm, pop them in the microwave for 15-20 seconds. They taste amazing at room temperature too, especially with a little butter spread on top!

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 2700-2950
• Protein: 37-42 g
• Fat: 100-115 g
• Carbohydrates: 410-430 g

Ingredients

For the streusel topping:

• 1/3 cup oats (I use Quaker Old Fashioned oats)
• 1.5 tbsp brown sugar
• 1 pinch cinnamon
• 1 tbsp butter (melted and cooled to room temperature)

For the muffin batter:

• 1/2 cup butter (I prefer Kerrygold unsalted butter)
• 3/4 cup sugar
• 2 eggs (room temperature, about 70°F)
• 1 tsp vanilla extract
• 3 bananas
• 2 cups flour
• 1 tsp baking soda
• 1/2 tsp salt
• 1 1/2 cups strawberries (diced into 1/2-inch pieces)
• 1 tbsp flour
• 425 °F oven temperature

Step 1: Prepare the Oat Streusel Topping

• 1/3 cup oats
• 1.5 tbsp brown sugar
• 1 pinch cinnamon
• 1 tbsp butter

Combine the oats, brown sugar, cinnamon, and 1 tablespoon melted butter in a small bowl, stirring until the mixture resembles coarse breadcrumbs with some texture remaining.

Set aside—this streusel will add a delicious crispy contrast to the tender muffin crumb.

I like to make this first so it’s ready to sprinkle on top right before baking.

Step 2: Prepare Your Pan and Mise en Place

• 3 bananas
• 1 1/2 cups strawberries
• 1 tbsp flour

Preheat your oven to 425°F and grease a standard 12-cup muffin tin with butter or cooking spray.

While the oven heats, peel and mash the 3 bananas in a bowl until mostly smooth with a few small lumps remaining, then dice the strawberries into ½-inch pieces and toss them lightly with 1 tablespoon flour—this coating helps prevent them from sinking to the bottom during baking.

Step 3: Cream Butter and Sugar

• 1/2 cup butter
• 3/4 cup sugar

In a large mixing bowl, beat ½ cup softened butter and ¾ cup sugar together on medium speed for 2-3 minutes until the mixture is pale, fluffy, and increased in volume.

This creaming step incorporates air into the batter, which helps the muffins rise and creates a tender crumb structure.

Step 4: Build the Wet Mixture

• creamed butter and sugar mixture from Step 3
• 2 eggs
• 1 tsp vanilla extract
• mashed bananas from Step 2

Add the 2 room-temperature eggs one at a time to the creamed butter and sugar, beating well after each addition until fully incorporated.

Pour in the vanilla extract and stir in the mashed bananas from Step 2, mixing just until combined.

The eggs and bananas add structure and moisture; I find using room-temperature eggs helps them integrate more smoothly without deflating the batter.

Step 5: Combine Dry Ingredients and Fold Together

• 2 cups flour
• 1 tsp baking soda
• 1/2 tsp salt
• wet mixture from Step 4
• strawberries coated with flour from Step 2

In a separate bowl, whisk together the 2 cups flour, 1 teaspoon baking soda, and ½ teaspoon salt.

Add the dry mixture to the wet ingredients and stir gently just until barely combined—don’t overmix, as this keeps the muffins tender.

Gently fold in the flour-coated strawberries from Step 2 using a spatula, being careful not to crush them.

Step 6: Fill and Top the Muffins

• batter from Step 5
• oat streusel topping from Step 1

Divide the batter evenly among the 12 muffin cups, filling each about ¾ full.

Sprinkle the oat streusel topping from Step 1 generously over each muffin, using it all to create a nice crunchy layer on top.

Step 7: Two-Stage Bake

Bake at 425°F for 5 minutes to set the exteriors and streusel, then reduce the oven temperature to 350°F and bake for an additional 12-15 minutes until the muffins are golden brown and a toothpick inserted into the center comes out with just a few moist crumbs.

Let the muffins cool in the tin for 10 minutes, then transfer to a wire rack to cool completely.

The initial high heat helps prevent the streusel from burning while the longer, gentler bake ensures the centers cook through evenly.

Tasty Strawberry Banana Oat Muffins

Delicious Tasty Strawberry Banana Oat Muffins recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 25 minutes mins

Total Time 42 minutes mins

Servings: 12 muffins

Calories: 2825

Ingredients Method

Ingredients

  

For the streusel topping::

• 1/3 cup oats (I use Quaker Old Fashioned oats)
• 1.5 tbsp brown sugar
• 1 pinch cinnamon
• 1 tbsp butter (melted and cooled to room temperature)

For the muffin batter::

• 1/2 cup butter (I prefer Kerrygold unsalted butter)
• 3/4 cup sugar
• 2 eggs (room temperature, about 70°F)
• 1 tsp vanilla extract
• 3 bananas
• 2 cups flour
• 1 tsp baking soda
• 1/2 tsp salt
• 1 1/2 cups strawberries (diced into 1/2-inch pieces)
• 1 tbsp flour
• 425 °F oven temperature

Method

 

1. Combine the oats, brown sugar, cinnamon, and 1 tablespoon melted butter in a small bowl, stirring until the mixture resembles coarse breadcrumbs with some texture remaining. Set aside—this streusel will add a delicious crispy contrast to the tender muffin crumb. I like to make this first so it's ready to sprinkle on top right before baking.
2. Preheat your oven to 425°F and grease a standard 12-cup muffin tin with butter or cooking spray. While the oven heats, peel and mash the 3 bananas in a bowl until mostly smooth with a few small lumps remaining, then dice the strawberries into ½-inch pieces and toss them lightly with 1 tablespoon flour—this coating helps prevent them from sinking to the bottom during baking.
3. In a large mixing bowl, beat ½ cup softened butter and ¾ cup sugar together on medium speed for 2-3 minutes until the mixture is pale, fluffy, and increased in volume. This creaming step incorporates air into the batter, which helps the muffins rise and creates a tender crumb structure.
4. Add the 2 room-temperature eggs one at a time to the creamed butter and sugar, beating well after each addition until fully incorporated. Pour in the vanilla extract and stir in the mashed bananas from Step 2, mixing just until combined. The eggs and bananas add structure and moisture; I find using room-temperature eggs helps them integrate more smoothly without deflating the batter.
5. In a separate bowl, whisk together the 2 cups flour, 1 teaspoon baking soda, and ½ teaspoon salt. Add the dry mixture to the wet ingredients and stir gently just until barely combined—don't overmix, as this keeps the muffins tender. Gently fold in the flour-coated strawberries from Step 2 using a spatula, being careful not to crush them.
6. Divide the batter evenly among the 12 muffin cups, filling each about ¾ full. Sprinkle the oat streusel topping from Step 1 generously over each muffin, using it all to create a nice crunchy layer on top.
7. Bake at 425°F for 5 minutes to set the exteriors and streusel, then reduce the oven temperature to 350°F and bake for an additional 12-15 minutes until the muffins are golden brown and a toothpick inserted into the center comes out with just a few moist crumbs. Let the muffins cool in the tin for 10 minutes, then transfer to a wire rack to cool completely. The initial high heat helps prevent the streusel from burning while the longer, gentler bake ensures the centers cook through evenly.