Line a 9x13" cake pan with aluminum foil and line the aluminum foil with saltine crackers, covering the bottom on the pan

In a small pot, mix together your butter, brown sugar, and vanilla then bring to a boil on medium heat

Boil for 2 to 3 minutes while stirring constantly

Pour your mixture over top you are saltine crackers and spread out evenly

Bake for about eight minutes at 325°

After the bubbles from the caramel start to disappear, evenly sprinkle your chocolate chips on top and set back in your oven for about 1 minute

Spread your chocolate out evenly and top with M&M's

Freeze for 30 minutes and break apart into small pieces

ENJOY!