01 -  In a medium mixing bowl, whisk together eggs, whole milk, salt, and ground black pepper until fully combined. 
 02 -  Heat half the olive oil (1/2 tablespoon) in a large nonstick skillet over medium heat. Add chopped onion and diced red bell pepper; cook for 3 minutes or until softened. 
 03 -  Add shrimp and smoked paprika to the skillet. Sauté for 2 to 3 minutes, stirring, until shrimp are pink and opaque. Transfer mixture to a bowl and set aside. 
 04 -  Add the fresh spinach to the skillet. Sauté for 1 to 2 minutes until wilted. Combine with the shrimp mixture, then wipe out the skillet if necessary. 
 05 -  Reduce heat to low. Add remaining olive oil (1/2 tablespoon). Pour in prepared egg mixture and gently stir with a spatula until eggs are just set and creamy. 
 06 -  Return shrimp, peppers, onion, and spinach to the skillet with scrambled eggs. Stir thoroughly to incorporate ingredients, then remove from heat. 
 07 -  Heat flour tortillas in a dry skillet or microwave until pliable. 
 08 -  Divide the shrimp and egg filling evenly among the four tortillas. Sprinkle each with shredded cheddar cheese. 
 09 -  Fold in sides of tortillas and roll up tightly to enclose the filling. 
 10 -  For extra crispness, toast the burritos seam-side down in the skillet for 1 to 2 minutes, until golden. 
 11 -  Serve burritos warm with choice of salsa, sour cream, cilantro, or avocado slices.