Rice Krispies Treats - cooking recipe

Ingredients

1/3 c. butter
1 (10 1/2 oz.) bag marshmallows
1 tsp. vanilla
6 1/2 c. Rice Krispies
food coloring (optional)

Preparation

Melt butter and marshmallows over medium heat.
Add vanilla and food coloring.
Stir in Rice Krispies, a little at a time. Coat Krispies well.
Press into a 9 x 13-inch baking pan or other suitable dish.
Refrigerate and cut into squares.