Sweet Sundae Bars Recipe

• 2 cups all-purpose flour
• 1/2 cup margarine, melted
• 1/4 cup butter, melted
• 1/3 cup powder sugar
• 1/4 tsp. salt
• 1 cup Oreo cookies - chocolate cream, ground
• 1.5 quart frozen vanilla yogurt
• 1 cup chocolate chips
• 1/4 tsp. salt
• 1 (8 oz.) cream cheese, softened
• 1 (14 oz.) sweetened condensed milk
• 2 tsp. lemon juice
• 1 (8 oz.) cool whip
• 1 cup Oreo cookies - chocolate cream, ground

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