Make Easter Chocolate Bark now: marbled chocolate bark with pastel M&Ms, ready in about 80 minutes.
Prepare a 9x13 rectangular baking pan by lining it neatly with a sheet of parchment paper, letting the paper overhang two opposite sides for easy removal later. The parchment should sit flat against the pan, corners smoothed so the chocolate will spread evenly; this simple setup prevents sticking and creates a crisp rectangular edge for the finished bark.
Place the milk or semi-sweet chocolate pieces into a large microwave-safe bowl and heat on high in short bursts: 30 seconds first, then 15–20 second bursts, stirring thoroughly between each interval until the chocolate is silky, fully melted, and glossy with a smooth, pourable viscosity. Keep the bowl warm and stir gently to maintain an even shine without seizing.
In a separate microwave-safe bowl, melt the white chocolate using the same short-burst method, stirring between bursts until the white chocolate becomes smooth, creamy, and pourable. Work carefully so the white chocolate stays pale and satiny, not overheated or grainy; transfer it close to the semi-sweet bowl so both warm, pourable chocolates are ready to use.
Pour the melted semi-sweet chocolate into the prepared parchment-lined 9x13 pan and, using an offset spatula or the back of a large spoon, spread it into an even layer that reaches the pan edges. The surface should be glossy and slightly viscous, with subtle flow lines from the spreading tool—this base creates the deep chocolate backdrop for the marbling.
Carefully pour the melted white chocolate in a loose zigzag over the warm semi-sweet layer, working quickly so the white sits on top rather than fully blending in. Aim for broad strokes and ribbons of white chocolate to form contrasting bands against the darker base—these intact ribbons are what will produce the pretty marbled effect when swirled.
Use the tip of a small paring knife or a toothpick to drag through the layers and create delicate marble patterns; stop once the swirls look pretty and avoid overworking so the colors remain distinct and not muddied. Keep the paring knife nearby—it will show the tactile motion in the next image and become a small prop that ties the process shots together.
Evenly sprinkle the pastel-colored M&Ms across the still-wet marbled surface, pressing a few very gently so they nestle slightly into the chocolate but remain mostly whole. The candy shells should read as bright, glossy dots—pink, yellow, blue, green, lavender—contrasting sharply with the matte painted pine surface beneath.
Lightly scatter the Easter-themed sprinkles over the top so they create tiny pops of color and a sense of playful texture across the marbled chocolate. Step back and admire the wet, shiny, swirled sheet studded with pastel candies—the pan is now ready to chill.

Place the pan straight into the refrigerator until the chocolate is completely firm, at least one hour; then lift the parchment overhang to remove the rectangular sheet and break it into irregular pieces. Arrange a small stack of broken bark on a rectangular strip of the same parchment to keep the geometric language of the pan, showcasing the marbled tops, glossy candy shells, and sharp snapped edges.
