These Easy Coffee Cake Muffins are made with a cinnamon streusel crumble topping and drizzled in icing. This is the perfect crumb cake for breakfast, brunch, or dessert!
Grease a muffin tin or add muffin/cupcake liners to the tin.
Combine the eggs, oil, Greek yogurt (or sour cream), and milk in a large mixing bowl.
In a separate bowl combine the dry ingredients: flour, brown sweetener, cinnamon, baking soda, and salt.
Add the dry ingredients to the bowl with the wet. Stir to combine fully, but do not overmix. If you overmix it will result in gritty/tough muffins.
Scoop 2 ½ tablespoons of batter into each muffin liner.
Crumble Topping
Add the cold butter, cinnamon, brown sweetener, and flour to a bowl. Use a fork to incorporate the butter and the ingredients until it forms crumbs. This may take a few minutes.
Sprinkle the crumbs over the muffins.
Baking
Bake for 20-25 minutes. I like to check in on the muffins around 17 minutes. Ovens bake at varying speeds.
Upon baking, allow the muffins to cool for 10 minutes. Then transfer the muffins to a wire rack.
Icing
Combine the ingredients in a small bowl. Drizzle over the muffins.
Notes
For a low carb substitute, you can use the same amount of King Arthur Keto Wheat Flour noted for all-purpose flour.
This recipe has not been tested with almond flour, coconut flours, or any other flours that have not been mentioned in this recipe. I recommend you find a recipe that uses those items if that's what you require.
Using the keto flour reduces the net carbs to 5 per muffin and increases the protein to 19 grams. The other macros remain the same.
You can use any milk you wish.
As the muffins rise, you may notice some areas with less crumble topping than others. If it bothers you, you can add more topping as the muffins bake.
When you lift your spoon, the batter should break and separate easily. If you over-mix the batter, it will result in a smoother and less lumpy batter. The will increase the amount of gluten that develops, which will then prevent the muffin from rising while baking.
If your muffins sink and do not rise you are likely using old, expired baking soda. Be sure to use fresh.
Your muffins may also sink if you don't bake them long enough.
If your crumb topping sinks into the muffins and doesn't stay on top, you used too much butter or the butter wasn't cold.
If your muffins fall apart, you likely didn't use room-temperature eggs.