MIX all ingredients in large bowl. Divide evenly between 2 half hotel pans (or use one 1/3-hotel pan for trial recipe).
BAKE in 375°F-convection oven for 1 hour (or 30 minutes for trial recipe) or until beans are tender and sauce is thickened. Transfer to steam table. (If beans begin to dry out, add 1/2 cup water to each pan as needed.)