• 1/2 cup butter, at room temperature
• 1/2 cup sugar
• 1/2 cup brown sugar
• 1 egg, at room temperature
• 1/3 cup peanut butter
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 teaspoon vanilla
• 1 cup flour
• 1 cup quick-cooking oats
• 1 cup (6 ounces) semi-sweet chocolate morsels
• 1/2 cup powdered sugar
• 1/4 cup peanut butter
• 2 to 4 tablespoons milk

Preheat oven to 350 degrees

Cream butter and sugars until fluffy. Blend in egg, 1/3 cup peanut butter, soda, salt, and vanilla. Add flour and oats; mix well. Spread in buttered 13-inch by 9-inch inch pan. Bake 20 to 25 minutes, until lightly browned.

Sprinkle immediately with chocolate morsels. Let stand 5 minutes to melt; spread chocolate over cookie crust.

Combine powdered sugar, 1/4 cup peanut butter, and enough milk to make a drizzling consistency. Mix well. Drizzle evenly over bars.

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