Step 1

Preheat your oven to 350 degrees Fahrenheit and prepare a large muffin tin with 12 muffin cups.

Step 2

Add the flour, baking powder, salt and sugar to a large bowl and whisk together to combine.

Step 3

Add the peaches and stir well to coat.

Step 4

Add the milk, egg, oil and vanilla extract, and stir together with a rubber spatula just until the flour disappears.

Step 5

Portion the batter out into the muffin cups evenly (about 3/4 full).

Step 6

Combine the flour, sugar and cinnamon and baking powder in a small bowl and stir.

Step 7

Add the cold butter in chunks and break it up with your fingers in the flour mixture until it resembles coarse crumbs.

Step 8

Top the muffins with a spoonful of the streusel topping.

Step 9

Bake at 350 degrees Fahrenheit for about 20 minutes until golden brown and a toothpick inserted into one of the muffins comes out clean.