Beef stroganoff is a rich and hearty dish that pairs well with a variety of sides. Here are some ideas for what to serve with beef stroganoff:

1. Buttered egg noodles
2. Rice
3. Mashed potatoes
4. Roasted potatoes
5. Grilled or roasted vegetables, such as asparagus, green beans, or Brussels sprouts
6. Salad, such as a Caesar salad or a mixed greens salad with a light vinaigrette
7. Bread, such as garlic bread or a baguette
8. Pickled vegetables, such as pickled red cabbage or pickled cucumbers
9. Steamed or roasted carrots
10. Sauteed mushrooms
11. Coleslaw or a shaved vegetable salad
12. Baked sweet potatoes

When choosing sides, its a good idea to balance the richness of the beef stroganoff with lighter, fresher flavors. For example, a light salad or grilled vegetables can help cut through the richness of the dish. Additionally, sides with a bit of acidity, such as pickled vegetables or a vinaigrette-based salad, can help balance the flavors. Finally, classic sides like buttered egg noodles or mashed potatoes are always a great option.