Peanut Brittle - cooking recipe

Ingredients

1 c. butter or margarine
2 Tbsp. water
1 tsp. vanilla
2 1/2 c. freshly popped popcorn
1/2 c. natural cereal (optional)
1 c. sugar
1 Tbsp. light corn syrup

Preparation

Note:
For one 15 x 10 x 1-inch pan or about 1 pound.