Classic Oatmeal Streusel Muffins are fluffy muffins full of hearty oats! Before baking, a streusel is sprinkled on top that is so good!
These muffins are not on the sweet side, so these muffins are easy for a breakfast or snack prep. Enjoy them with a dollop of butter or jam to kick start your day!
Ingredients Notes
Full recipe and ingredients are in the recipe card below. Feel free to scroll through this section to view certain key ingredients we’re using!
- All-purpose flour – This flour is used for the muffins.
- Brown sugar – I used light brown sugar, but dark brown sugar works as well!
- Cornstarch – Used to enhance the texture.
- Eggs – Must be at room temperature before starting your bake.
- Oil – You can use any type of oil, I used canola oil.
- Oats - Make sure to use rolled oats, also known as large flake oats. Quick oats will not work for this recipe!
Step by step instructions
Here is how to make and bake these Classic Oatmeal Streusel Muffins. You will need a 12 muffin tin, muffin liners, 2 mixing bowls, a spatula, and a whisk.
Step 1 – Prep. Line your muffin tin with 12 liners and set aside. If you need a recommendation, this is my favourite tin.
Step 2 – Make the streusel. In a medium sized bowl, add flour, sugar, and cold butter. Using your hands, mix this until crumbly and combined. Set the bowl in the refridgerator while you make the muffin batter.
Step 3 – Mix together dry ingredients. In a medium-sized bowl, add in the dry ingredients. Using a spatula, mix until just completely combined.
Step 4 – Mix wet ingredients. In a large bowl add eggs, vanilla, brown sugar, oil, and sour cream. Whisk until combined.
Step 5 - Combine dry and wet ingredients. Add the ingredients together and gently mix together with a spatula until a muffin batter forms. Don't over-mix!
Step 6 – Scoop. Evenly divide the batter between 12 liners. Sprinkle a handful of streusel on top.
Step 7 – Bake. Bake the muffins at 375°F for 18-24 minutes. The muffins are ready when a toothpick inserted comes out clean.
FAQ
How do I store these muffins?
These muffins are best served fresh or the next day. They stay good covered at room temperature for up to 3 days, and in an airtight container in the refrigerator for up to 5 days.
Do I have to add milk?
Yes! This is one of the main wet ingredients in this recipe. You can use dairy or non-dairy milk such as almond milk.
Can I add chocolate chips?
Yes! Feel free to add in 3/4 cups of mini chocolate chips.
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Classic Oatmeal Streusel Muffins
Ingredients
For the muffins
- 1/2 cup milk* room temperature
- 3/4 cups full-fat sour cream room temperature
- 2/3 cups oil
- 3/4 cups light brown sugar or dark brown sugar
- 2 eggs room temperature
- 1 tsp vanilla
- 1 1/2 cups rolled oats or large flake oats/old-fashioned
- 1 3/4 cups all-purpose flour
- 2 tsps cornstarch
- 1 tsp baking soda
- 1 1/2 tsp baking powder
- 1/2 tsp salt
For the streusel
- 3/4 cup all-purpose flour
- 5 tbsp unsalted butter cold
- 1/3 cup white sugar
Instructions
For the streusel
- In a small bowl, make the streusel. Combine flour, white sugar, and cold cut up butter. Using your hands, mix it together until combined into a crumbly, streusel mixture. Set aside while you make the muffin batter.3/4 cup all-purpose flour, 5 tbsp unsalted butter, 1/3 cup white sugar
For the muffins
- Preheat the oven to 375℃/190℉. Line your muffin tin with 12 liners and set aside.
- In a medium-sized bowl, add in the dry ingredients. Mix with a spatula and set aside.1 1/2 cups rolled oats, 1 3/4 cups all-purpose flour, 2 tsps cornstarch, 1 tsp baking soda, 1 1/2 tsp baking powder, 1/2 tsp salt
- In a large bowl add the wet ingredients. Whisk for 2-3 minutes until combined.1/2 cup milk*, 3/4 cups full-fat sour cream, 2/3 cups oil, 2 eggs, 1 tsp vanilla, 3/4 cups light brown sugar
- Combine the dry and wet ingredients together with a spatula. Don't over-mix!
- Evenly divide the batter between 12 liners. Sprinkle a handful of streusel on top.
- Bake the muffins for 18-24 minutes. The muffins are ready when a toothpick inserted comes out clean. Mine took 23 minutes total.
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