Heat the oven to 375 degrees. Coat 24 mini muffin cups with non-stick cooking spray. Cut the flour tortillas into 2 1/2- to 3-inch rounds (depending on size of muffin cups). Press into the bottom and up sides of the muffin cups; lightly coat with cooking spray. Bake for 8 to 10 minutes or until lightly browned on edges.
Meanwhile, cook the chorizo in a large nonstick skillet over medium-high heat for 5 to 8 minutes or until thoroughly cooked and no longer pink in center; drain on paper towels.
Spoon some refried beans into bottom of tortilla cups; top with the chorizo, tomatoes and cheese. Bake for 5 minutes or until hot and the cheese is melted.
Serve topped with sour cream, cilantro and a squeeze of lime.