Beat all ingredients until smooth. (I use a whisk.)
Pour the batter into the pie plate.
Bake for 55 to 60 minutes, until a toothpick inserted in the centre comes out clean.
Let cool and serve.
Notes
Whisk until smooth. Lumps of Bisquick can leave little floury spots, so take an extra minute to get the batter silky.
Use the right pie plate. A 9" plate gives you a slightly thicker pie, and a 10" plate gives you a slightly thinner one. Either works, but the 10" may bake a little faster.
Let it cool. Give the pie time to cool before slicing so the filling sets and you get neat slices.
Don't overbake. Start checking at 50 minutes. Overbaked pumpkin pie can crack and turn dry.