Mix the batter only until the dry ingredients disappear. (Lumps are normal.) Overmixing causes tough or misshapen loaves.
Preheat oven to 350°. Beat first 4 ingredients at medium speed with a heavy-duty electric stand mixer until well blended. Add eggs, 1 at a time, beating just until blended after each addition. Add pumpkin, and beat at low speed just until blended.
Whisk together flour and next 4 ingredients in a medium bowl until well blended. Add flour mixture to pumpkin mixture, and beat at low speed just until blended. Spoon batter into 6 lightly greased (with cooking spray) 5 3/4- x 3 1/4-inch disposable aluminum loaf pans.
Bake at 350° for 35 to 40 minutes or until a wooden pick inserted in center comes out clean. Cool bread in pans on a wire rack 10 minutes. Remove from pan, and cool 30 minutes before slicing.
We tested with Back Forty Truck Stop Honey Brown Ale.