If you're looking for a place to enjoy an authentic European breakfast at, then we recommend you check out Paul Bakery in Gurgaon (their first & only branch in Delhi NCR as of now). I found the place to be really accommodating and welcoming, as they have seating options available for both small and big groups.
I recommend you try their hot chocolate, as it is the perfect amount of sweet and can be paired with any of the viennoiseries they offer. Do try the Gourmandise, which is basically a cream and chocolate danish. Their breakfast breads are really filling (although Cheese Benoîton was a little dry) or you could even try their Bircher muesli if you're looking for a healthier alternative. What I really liked was this picture-perfect dish called the 'Croque Madame' that you should definitely try if you're a non-vegetarian (it has pork ham, eggs and avocado).
They also have a wide and impressive beverage menu, which includes alcoholic options too.
Although they're popularly known for their breakfast, I found everything else on the menu equally good. There are too many options that Paul has and I haven't tried, but they all seem really appetising.