If you want to make the dough itself a little sweeter, substitute agave nectar for a couple tablespoons of the soy milk. Or, if you want sweetness without calories, try adding a little stevia or your favorite sweetener to the batter.
1/2cuppumpkin(canned or cooked, pureed, and drained)
1/2cupplain soy milk (plus additional, as needed)
Preheat oven to 425F and lightly oil a non-stick baking sheet. Mix the dry ingredients together well (flour through raisins). Add the pumpkin and mix until crumbly (do not overmix). Combine the soymilk and lemon juice and add it, stirring until a soft dough forms. If all flour is not moistened, add additional soymilk a teaspoon at at time until dough forms a ball.
Turn out the dough onto a well-floured surface and sprinkle the top lightly with flour. Roll out about 3/4 inch thick. Using a 1 1/2-2-inch wide biscuit cutter or glass dipped in flour, press straight down without twisting to cut into 12-15 biscuits.
Place the biscuits, sides lightly touching, on the oiled sheet. Bake until tops are lightly browned, 9-11 minutes. Serve hot.