Cut bread into 12 (1/2-inch) slices. Place on baking sheet.
Bake at 375° for 5 to 7 minutes or until toasted.
Sauté garlic and rosemary in hot oil in a nonstick skillet over medium-high heat 2 minutes. Stir in beans and next 3 ingredients. Cook until thoroughly heated, stirring frequently and mashing beans partially to desired consistency.
Spread about 2 1/2 Tbsp. bean mixture over each bread slice.