1. Make meatballs: Preheat oven to 425°F. Line a rimmed baking sheet with parchment paper. Place bread in a medium bowl, sprinkle with milk; let stand about 10 minutes.
2. Using a fork, mash bread mixture well. Using your hands or a wooden spoon, stir in remaining meatball ingredients until combined. Using about 1½ tbsp of the mixture each, shape into 24 meatballs. Arrange on prepared baking sheet. Bake until no longer pink in center or an instant-read thermometer registers 160°F, about 25 minutes. Drain well.
3. Meanwhile, make sauce: In a large saucepan on medium, heat oil. Add onion, bell pepper, marjoram and bay leaf and cook, stirring often, until vegetables are very tender but not browned, about 5 minutes. Add garlic and cook, stirring, until fragrant, about 45 seconds. Add tomato purée, ½ cup water and salt and bring to a simmer. Reduce heat to low, cover and simmer, stirring occasionally, for 15 minutes.
4. Add meatballs to sauce and simmer, uncovered, until flavors are melded, about 10 minutes. Sprinkle with mint.
MAKE AHEAD: Cool completely. Cover and refrigerate up to 3 days. In a saucepan, cover and reheat on medium-low, about 10 minutes.
- Serving Size 3 meatballs and 2 tbsp sauce
- Calories 207
- Carbohydrate Content 13.5 g
- Cholesterol Content 61 mg
- Fat Content 12 g
- Fiber Content 3 g
- Protein Content 13 g
- Saturated Fat Content 4 g
- Sodium Content 386 mg
- Sugar Content 6 g
- Monounsaturated Fat Content 6 g
- Polyunsaturated Fat Content 1 g