1 c. pretzels, crushed
1 stick butter, melted
1/2 c. sugar
1 8 oz. Cool Whip
1 8 oz. pkg. cream cheese
1/2 c. sugar
1 20 oz. can crushed pineapple
1/4 c. sugar
2 tbsp. cornstarch

Mix pretzels, butter and 1/2 cup sugar. Press into a 13x9 inch glass dish. Mix Cool Whip, cream cheese and 1/2 cup sugar together and spread on first layer. Drain juice from pineapple and mix with 1/4 cup of sugar and cornstarch. Cook until thick, add pineapple and pour on top. Refrigerate until cool.