Easy Cheesy Scalloped Potatoes

5 cups sliced unpeeled potatoes
2 T oil
1 cups copped onions
5 garlic cloves peeled and minced
1 tsp dried basil
½ cup chopped green bell pepper
2 cups grated cheddar cheese
1 cup grated mozzarella cheese
1 ½ tsp salt
pepper
2 T butter melted
1 cup sour cream
3/4 cup milk
paprika
sliced tomatoes

Preheat oven to 375, grease 9x12 baking pan. Cook potatoes in water until tender. Heat oil and saute onions, garlic, basil, and green pepper. Add potatoes along with 1 ½ cups cheddar cheese and the mozzarella salt and pepper, butter, sour cream, and milk. Stir until well combined. Spoon into dish sprinkle remaining cheese and paprika. Top with sliced tomatoes. Cook 30 min until brown.