Article: The spray will make it easier to release the cakes from the cups when they're baked. You can also use molds or ramekins, for a fancier touch. You may even want to lightly dust the insides of the molds with white sugar. You won't be needing the cups for serving, so it doesn't matter if they don't look incredibly fancy. You can use a bit of butter instead of the baking spray if you choose. You can line the sheet with aluminum to catch any stray bits of chocolate that might drip onto it. Place the butter and chocolate in a large bowl and heat it up on high until the butter is completely melted. You can use semisweet chocolate, bittersweet chocolate, or even a mixture of the two, for a unique flavor. However, it's best to either use semisweet on its own or use a half and half mixture. Once the butter is melted, just whisk the mixture until the chocolate is melted, too. You can also melt the butter and chocolate in a double-boiler over simmering water instead. A medium-sized saucepan will also do the trick.    {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/05\/Make-Chocolate-Molten-Lava-Cake-Step-4Bullet1.jpg\/v4-460px-Make-Chocolate-Molten-Lava-Cake-Step-4Bullet1.jpg","bigUrl":"\/images\/thumb\/0\/05\/Make-Chocolate-Molten-Lava-Cake-Step-4Bullet1.jpg\/aid1514595-v4-728px-Make-Chocolate-Molten-Lava-Cake-Step-4Bullet1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"<div class=\"mw-parser-output\"><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/3.0\/\">Creative Commons<\/a><br>\n<\/p><p><br \/>\n<\/p><\/div>"}

What is a summary?
Preheat your oven to 425ºF (220ºC). Spray four custard cups with baking spray. Place the cups on a baking sheet. Melt the butter and chocolate in the microwave for 1 minute.