Step 1: Prepare the Oven & Pan: Preheat oven to 350F (175C). Grease and flour a 9x13 inch baking pan. Ensuring thorough coverage prevents sticking and facilitates easy removal of the finished cake. Alternatively, line the pan with parchment paper, leaving an overhang for easy lifting.
Step 2: Combine Wet Ingredients: In a large bowl, whisk together the melted butter, eggs, milk, and vanilla extract until well combined. The mixture should be smooth and homogenous, ensuring even distribution of the ingredients throughout the cake.
Step 3: Incorporate Cake Mix: Gradually add the yellow cake mix to the wet ingredients, mixing on low speed until just combined. Be careful not to overmix; overmixing can result in a tough cake. A few streaks of cake mix are acceptable at this stage.
Step 4: Arrange Peaches: Pour the batter into the prepared baking pan. Arrange the drained peach slices evenly over the top of the batter. Ensure that the peaches are spaced uniformly to ensure even distribution of flavor and moisture.
Step 5: Create Cinnamon-Sugar Topping (Optional): In a small bowl, combine the granulated sugar and cinnamon (if using). Sprinkle the mixture evenly over the peaches. This creates a delightful caramelized topping during baking.
Step 6: Bake the Cake: Bake in the preheated oven for 30-35 minutes, or until a wooden skewer inserted into the center comes out clean. The cake should be golden brown and slightly springy to the touch.
Step 7: Cool & Serve: Let the cake cool in the pan for 10-15 minutes before slicing and serving. Cooling allows the cake to set properly, making it easier to cut and serve. Optionally, dust with powdered sugar or serve with a scoop of vanilla ice cream.
Optional Tips:
For a richer flavor, substitute the milk with buttermilk or sour cream.
If using fresh peaches, peel and slice them before arranging on the cake.
Add a streusel topping for added crunch: Combine 1/2 cup flour, 1/4 cup brown sugar, 1/4 cup butter (cold, cut into pieces), and 1/4 cup chopped nuts. Sprinkle over the peaches before baking.
Nutritional Information (Approximate, per serving)