SAUSAGE Filling: Saute onions and garlic in hot oil 5 min. or until crisp-tender. Add ground beef; cook until browned, stirring occasionally. Drain, if necessary; place in large bowl. Stir in sausage. Mash half the beans. Add to meat mixture with remaining whole beans and all remaining ingredients except peppers; mix lightly. Spoon about 3/4 cup meat mixture into each pepper; place in 2 full-size hotel pans (or in 1 half-size hotel pan for trial recipe).

MASHED Potatoes: Cook potatoes in boiling salted water 18 min. or until tender; drain. Transfer to bowl of mixer fitted with paddle attachment. Add remaining ingredients; beat until well blended. Spoon or pipe heaping 1/3 cup over meat mixture in each pepper.

SAUCE:
MIX all ingredients until well blended; pour around peppers in pans.

BAKE in 300ºF-convection oven 50 min. or until peppers are tender, rotating pans and covering if necessary to prevent overbrowning.

FOR each serving: Spoon about 1/4 cup cooking liquid from pan into shallow bowl or onto plate; top with 1 pepper.