Preheat the oven to 200C °. Thoroughly wash large potato tubers with running water, dry with a paper towel. Brush with olive oil, bake in the oven for 1 hour.
While the potatoes are baking, fry the bacon slices until golden brown, then chop them finely. Grate the cheese. Chop green onions.
Remove the potatoes from the oven. Cut off the top third of the tuber, from the bottom with the help of a teaspoon, extract the pulp, forming a “boat” out of the potatoes.
Combine milk, sour cream, cream and butter in a large bowl. Add potato pulp. Beat with a mixer. Fill the potato halves with the mixture, add bacon, green onions and cheese to them. Bake at 175C ° for 15 minutes.