1 1/2 cups crushed graham crackers
1/2 teaspoon ground cinnamon
2 tablespoons brown sugar
1/2 cup butter, melted
1 (8 ounce) package cream cheese, softened
1 (29 ounce) can sweet potatoes, drained and mashed
1/4 cup packed brown sugar
1/4 cup light cream
2 eggs, lightly beaten
2 tablespoons vanilla
1 (10.5 ounce) package miniature marshmallows