Creating the Patchwork Quilt Cake can be done by following these step-by-step instructions:

1. Preheat Your Oven: Set your oven to 350°F (175°C). Grease and flour four 9-inch round cake pans.

2. Prepare the Cake Batter: In a large mixing bowl, whisk together flour, sugar, cocoa powder (if making chocolate layers), baking powder, and salt.

3. Mix Wet Ingredients: In another bowl, combine milk, vegetable oil, eggs, and vanilla extract. Mix until well combined.

4. Combine Ingredients: Gradually add the wet mixture to the dry ingredients, stirring until smooth and no lumps remain.

5. Divide the Batter: Split the batter into smaller bowls based on the number of colors/flavors you want. Add food coloring to achieve your desired colors for the patchwork effect.

6. Pour into Pans: Pour each colored batter into the prepared cake pans, ensuring even distribution.

7. Bake: Place all layers in the oven and bake for 40-50 minutes. Check for doneness by inserting a toothpick in the center. If it comes out clean, it’s ready!

8. Cool the Layers: Once baked, remove the layers from the oven and allow them to cool in pans for 10 minutes. Transfer to wire racks to cool completely.

9. Prepare the Frosting: In a mixing bowl, beat the softened butter until creamy. Gradually add powdered sugar and vanilla extract. Mix until well blended, adding heavy cream or milk to adjust the consistency as needed.

10. Assemble the Cake: Once cooled, place one layer on a serving platter. Spread a layer of frosting or fruit preserves on top, then add another layer. Repeat until all layers are stacked.

11. Frost the Outside: Use the remaining frosting to coat the sides and top of the cake. Smooth it out with a spatula.

12. Decorate: For added flair, decorate the top with additional frosting patterns or even fresh fruits.