Can this be made in under 30 minutes?

Yes, the recipe is designed to be quick and efficient.

Does it work for meal prep?

Most versions store well for one to three days.

Yes, simple swaps can be made for convenience or dietary needs.

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Preheat your oven to 350°F (175°C).
In a saucepan, melt the butter over medium heat, stirring until it becomes golden brown and has a nutty aroma. Remove from heat and let it cool slightly.
In a large mixing bowl, combine the brown butter, brown sugar, and granulated sugar. Mix until well blended.
Add the eggs and vanilla extract, and stir until combined.
In another bowl, whisk together the flour, baking soda, and salt. Gradually add the dry ingredients to the wet mixture, stirring until just combined.
Fold in the rice krispies and mini marshmallows.
Drop spoonfuls of the dough onto a lined baking sheet, spacing them about 2 inches apart.
Bake for 10-12 minutes or until the edges are golden.
Allow to cool on the baking sheet for 5 minutes before transferring to a wire rack.

Watch the butter closely as it browns, and let it cool slightly before mixing with eggs. Use fresh mini marshmallows for best results.