As far as Russian/Easter European pastry stores go - this one is great! It's a little bit hard to find since it's in the corner of a pretty big plaza but it's worth looking for!
I would suggest putting in your order ahead of time once you find out what you want to buy - they make amazing stuff, for as many people as you want, within a day or so.
If you pre-order you're sure to get the best ingredients and everything will be super fresh!
AS A PROUD UKRAINIAN, i would suggest Napoleon (sooo much cream, and real stuff too with tons of butter - not like the one they make in regular grocery stores).
If you want something simple, go with the cherry pie - it's delicious but a little pricey.
All in all, this is one of the best places in Toronto for baked goods of "European descent"