MICROWAVE squash on high for 4 min. Cut into 1/2-in. slices, crosswise. Remove seeds, then cut into 2-in. pieces. Toss with 2 tsp canola oil on a baking sheet. Bake until tender, 15 to 20 min.
HEAT a large non-stick frying pan over medium-high. Add remaining 1 tsp canola oil, then minced garlic and Thai red curry paste. Cook, 1 min. Stir in coconut milk and fish sauce. Boil, then reduce heat to medium. Add shrimp. Cook until shrimp turns pink, about 5 min. Stir in roasted squash, lime juice and lime zest. Serve over rice.