1Heat oven to 375°F. Cook ground beef and onion in 10-inch skillet over medium heat 8 to 10 minutes, stirring occasionally, until beef is thoroughly cooked; drain well. Stir in remaining ingredients except rolls and salsa.
2Unroll crescent rolls; divide into 4 rectangles. Press each into 8x6-inch rectangle. Press each rectangle in 1 1/2-cup mini loaf pan. Divide beef mixture evenly over dough in each pan; press gently.
3Bake 24 to 28 minutes or until rolls are golden brown. Cool in pan 5 minutes; turn pan upside down onto serving plate. Serve loaves with salsa.