Preheat the oven to 400F. Toss cubed butternut squash with 1 teaspoon of olive oil, ¼ teaspoon of salt, and a dash of black pepper. Spread the seasoned squash out on a baking sheet and cook for 25 to 30 minutes (fresh squash) or 10 to 12 minutes (frozen squash). Once cooked, remove from heat and transfer to a medium bowl.
While the squash cooks, drain and rinse the cannellini beans. Add the beans to a small sauce pot and add enough water to cover the top of the beans. Bring the beans to a simmer and cook for 8 to 10 minutes. Drain and transfer the beans to the bowl with the squash.
Mash the beans and butternut squash with the back of a fork or with a potato masher. Mix and mash until most of the beans and squash are well mashed.
Heat 2 teaspoons of olive oil in a large skillet over medium heat. Spoon the squash-bean mixture to the hot pan and flatten in an even layer. Let the beans sit undisturbed in the pan until the bottom begins to brown, roughly 5 to 7 minutes.
Add butter, maple syrup, ½ teaspoon of salt, and ¼ teaspoon of black pepper. Stir well to combine and remove from heat.
Transfer coleslaw mix to a serving bowl. Half tomatoes and grapes and transfer to the same bowl as the coleslaw mix.
Make the slaw dressing by whisking together the olive oil, apple cider vinegar, maple syrup, lime juice, salt and pepper. Drizzle over grape-slaw mixture.
Wrap tortillas in foil and heat in the oven for 5 to 7 minutes. Alternately, you can spread the tortillas out on a baking sheet and heat them in the oven, uncovered, for 5 to 7 minutes. Or you can wrap them with a kitchen towel and heat them in the microwave for 30 seconds, or until warm.
Serve by spreading out a spoonful of refried butternut squash on the warm tortilla. Top with grape slaw, pumpkin seeds, and a squeeze of fresh lime. Finish with a light drizzle of maple syrup (or honey), if desired (about 1 teaspoon).