Step 1

Preheat oven to 400° F. Graciously grease your muffin tin with Crisco.

Step 2

Wash and peel peaches. Dice into small pieces about the size of a dime.

Step 3

Sift flour and measure 2 1/2 cups after sifted. Reserve 1/4 cup.

Step 4

Mix the 1/4 cup flour with peaches and gently stir to coat the peaches. Set aside.

Step 5

Combine remaining flour with baking powder, salt and sugar. Set aside.

Step 6

In a medium bowl, beat egg with a fork.

Step 7

Melt butter in microwave for 20-30 seconds until melted. Add melted butter to egg and whisk to combine.

Step 8

Add vanilla extract, buttermilk and sour cream to the eggs and butter. Use a whisk to whip together all wet ingredients until smooth.

Step 9

Slowly add wet ingredients to dry ingredients and stir with a wooden spoon. Mix only until combined.

Step 10

Fold in peaches and macadamia nuts.

Step 11

To prepare streusel topping, combine butter with all dry ingredients. Use a pastry cutter or fork to cut the butter into the dry ingredients until no large chunks remain.

Step 12

Fill each muffin cup to the top edge. Sprinkle with streusel topping.

Step 13

Bake for 5 minutes at 400° F. After 5 minutes, reduce oven temperature to 350° F and bake for 15-18 minutes until edges are golden brown. Use a toothpick to check for doneness. Stick the toothpick into the center of the muffin and if it comes out clean, the muffin is done.