Pleasing Potato Pizza

Directions

1. Preheat oven to 350°. In a large skillet, cook bacon over medium heat until partially cooked but not crisp, stirring occasionally. Add onion and pepper; cook and stir until bacon is crisp. Drain well.
2. Place potatoes and water to cover in a large saucepan; bring to a boil. Reduce heat; cook, uncovered, until tender, 10-15 minutes.
3. Meanwhile, unroll and press pizza crust onto an ungreased 14-in. pizza pan; prick several times with a fork. Bake until lightly browned, about 15 minutes. Increase oven setting to 375°.
4. Drain potatoes; return to pan. Mash potatoes, gradually adding milk and salt. Spread over crust. Top with bacon mixture and cheeses.
5. Bake until cheese is melted, 15-20 minutes. If desired, sprinkle with chives and serve with sour cream.