Streusel Mixture: Add all ingredients in a bowl, mix together using a pastry blender or fork. Set aside until it becomes a crumble.
Pre-heat the oven to 425°F. Line a 12-cup muffin pan with cupcake liners or spray with non-stick cooking spray.
Cut the peaches in very small pieces.
Take a medium sized bowl and sift together flour, salt, and baking powder. Whisk and set aside.
Take a large bowl and beat together eggs, melted butter, sugar, vanilla extract, milk, and peach juice.
Now add the dry ingredients into the wet mixture. Using a whisk start stirring until just combined. Do not overmix.
Add one tablespoon of flour and toss one cup peaches. This will prevent sinking of the pieces.
Using an ice-cream scoop, scoop out the muffin batter into the liners. This will make15 muffins.
Sprinkle the rest of ½ cup peaches chunks on top of the muffins.
Now sprinkle the streusel over the tops of the muffins.
Bake the muffins at 425 F for the first five minute and then reduce the heat to 350F. Bake for another 15 – 18 minutes until a toothpick inserted comes out clean.
Cool muffins in pan for 5 minutes. Place the muffins on the wire rack to cool completely.
Notes
Cut the Peaches in Small Chunks: Make sure to cut the peaches in small chunks. Large chunks will go down to the bottom because of being heavy. It will also add too much moisture in the muffins keeping the muffins too wet.Toss the Peaches Chunks in Flour: Make sure to toss the peach chunks in flour so that they will distribute equally throughout the muffins and will not sink in the bottom. Gluten Free: You can easily make these muffins gluten free by replacing the all-purpose flour with gluten free flour. It should work fine.Take the Muffins Out at 5 Minutes: You want to ensure to take out the muffins out of the muffin pan after five minutes. If you will let them cool in the pan they will cook further and make the texture too dense and tough.Cool the Butter: This recipe calls for melted butter. Make sure to let it cool before incorporating in the mixture. If you add the hot butter in the batter it might cook up the eggs.