Melt butter in medium pot over low heat. Add marshmallows and heat, stirring occasionally, until melted. Remove from heat and stir in granola and pecans, mixing well.
Transfer mixture to lightly buttered 9″ x 5″ loaf pan. Press firmly and evenly into pan and set aside to cool.
Invert pan to remove “block” of granola. Cut lengthwise in half, then crosswise into 8 bars. Serve as is, or, if desired, insert extra-long toothpicks as handles and dip partway in chocolate.
Nutrition information per bar (with chocolate) – calories: 192 ; protein: 3g ; carbs: 26g; saturated fat: 2g; monounsaturated fat: 5g; polyunsaturated fat: 1g; cholesterol: 4mg; fiber: 2g; sodium: 53 mg.