Place potatoes in a saucepan and cover with water. Bring
to a boil; cook for 20-25 minutes or until tender.Unroll the pizza crust onto
an ungreased 14" pizza pan; flatten dough and build up edges slightly.
Prick dough several times with a fork. Bake at 350°
for 15 minutes or until lightly browned. Cool.
Drain potatoes and transfer to a mixing bowl. Mash with milk and salt
until smooth. Spread over crust. In a skillet, partially cook bacon.
Add onion and red pepper; cook until bacon is crisp and vegetables are tender.
Drain well; sprinkle over potatoes. Top with cheeses.
Bake at 375° for 20 minutes or until
cheese is melted. Serve with sour cream is desired. Yield: 8
slices.