Combine lamb and next 5 ingredients (lamb through garlic) in a zip-top heavy-duty plastic bag; seal bag, and shake well to coat. Marinate in refrigerator 20 minutes.
Heat tortillas according to package directions.
Heat 1 teaspoon oil in a nonstick skillet over medium-high heat.
Add lamb; saut 6 minutes. Divide lamb evenly among tortillas; sprinkle with mint, and roll up.