Connecting a polygon to a smd pad (Eagle)
Add a wire to the pin in the schematic named something (like MP1), and just leave it floating. Then in the board view, type ripup @; to view the polygon outline, right click on it and name it MP1 (same as the name of the wire in the schematic). Type ratsnest and you'll see the pour connected to the pad.

BTW, this will connect the pour to the pad, but won't give you a "larger solderable area". The problem is the solder mask will still cover the copper pour. If you want a particular size pad, you need to do this in the part library and not use a copper pour. This will actually make soldering more difficult, because the larger copper area will "wick" away heat from the pad, so you'll have to use a lot more heat to get the solder to melt.

This is why there are "thermals" on pads, they are there to limit the amount of thermal transfer to the copper pour to make soldering easier.