Step 1

Grease a 9x13 pan, or line with parchment paper.

Step 2

Melt butter over medium-low heat in large pot.

Step 3

Add the brown sugar and maple syrup and stir until the brown sugar has dissolved.

Step 4

Add the marshmallows and stir until they have melted.

Step 5

Take off heat.

Step 6

Add the sea salt and vanilla and stir.

Step 7

Add rice cereal and toasted pecans to the melted marshmallow mixture and then press into prepared pan.

Step 8

Let cool.