Preparation

• Preheat your oven to 350°F (177°C).
• Cut cold butter into 12 equal pieces and place them in the muffin cups. Sprinkle ½ teaspoon brown sugar into each cup before adding sliced peaches, arranging them nicely.
• In a mixing bowl, whisk together flour, baking powder, baking soda, and salt until well combined.
• In another bowl, beat the room temperature butter and granulated sugar for about 2 minutes until fluffy. Add the egg and vanilla; continue mixing until everything is well incorporated.
• Gradually add in the flour mixture, alternating with the buttermilk until just combined. Fold in the cubed peaches.
• Divide the batter evenly into the prepared muffin cups, ensuring each one is about three-quarters full.
• Bake for 25-30 minutes until a toothpick inserted into the center comes out clean.
• Cool in the pan for 5 minutes, then carefully run a knife around the edges to loosen the cakes before inverting onto a wire rack.
• Serve warm for that amazing fresh-out-of-the-oven experience!