Butter a 9x9 baking dish.

In a large saucepan, melt the butter over medium heat. Once melted, add 6 cups of mini marshmallows.

Reduce heat to low and continue stirring just until the marshmallows are melted. Remove from the heat and stir in the vanilla and salt.

Add the rice krispie cereal and stir until combined. Fold in the remaining cup of mini marshmallows and then add 1 cup of mini eggs and fold them in. You'll want to stir gently but quickly so the chocolate doesn’t melt too much.

Using a buttered spatula, GENTLY press the rice krispie mixture into the pan so that it is spread out evenly. If you press the mixture too hard, the treats will be hard as well. The harder you press the harder the treats will be. Set aside.

Melt the white chocolate in the microwave in short bursts of 20 seconds, stirring each time.

Drizzle the melted white chocolate over the bars. Sprinkle the remaining 1 cup of mini eggs on top.

Allow to set at room temperature for 1 hour.

Cut into 9 large bars or 18 small bars.