Instructions: Combine biscuit mix and milk, stirring until dry ingredients are moistened. Turn dough out onto a floured surface, and knead 3 or 4 times. Press dough into bottom and up sides of a lightly greased 13- by 9-inch baking dish. Top with tomato slices, and set aside.

Cook onion in butter in a small skillet until tender; stir in sour cream and next 5 ingredients. Spoon over tomato slices, and sprinkle with paprika.

Bake at 400 degrees for 20 to 25 minutes. Let stand 10 minutes before serving.

This recipe yields 12 servings.

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