Step 1

Cook potatoes in large saucepan of boiling salted water until very tender, about 20 minutes. Drain. Return potatoes to pan and mash. Cool potatoes. Stir in 1 cup cheese and mint. Season filling to taste with salt and pepper.

Step 2

Line 2 baking sheets with plastic wrap; sprinkle with flour. Stack 6 wonton wrappers on work surface. Trim edges of wonton stack to form 2 3/4-inch square, preferably using scallop-edged pastry wheel cutter. Repeat stacking and trimming with remaining wrappers. Place half of wrappers on work surface. Place 1 tablespoon filling in center of each. Brush edges of wrappers lightly with water. Top each with another wrapper; press on edges to seal well. Place ravioli on prepared baking sheets. (Can be made 4 hours ahead. Sprinkle lightly with flour. Cover with plastic wrap and chill.)

Step 3

Heat oil in large nonstick skillet over medium heat. Add garlic and stir 30 seconds. Add tomatoes and sauté until heated through, about 5 minutes. Season sauce to taste with salt and pepper. Transfer 1/2 cup sauce to large shallow serving bowl.

Step 4

Working in batches, cook ravioli in large pot of boiling salted water until just tender but still firm to bite, about 3 minutes. Using slotted spoon, transfer ravioli to bowl with sauce. Spoon remaining sauce over. Sprinkle with remaining 1/4 cup cheese and serve.